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Definition of Al

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A clerical error
Clerical Cler"ic*al, a. [LL. clericalis. See Clerk.] 1. Of or pertaining to the clergy; suitable for the clergy. ``A clerical education.' --Burke. 2. Of or relating to a clerk or copyist, or to writing. ``Clerical work.' --E. Everett. A clerical error, an error made in copying or writing.
Abdominal ring
Abdominal Ab*dom"i*nal, a. [Cf. F. abdominal.] 1. Of or pertaining to the abdomen; ventral; as, the abdominal regions, muscles, cavity. 2. (Zo["o]l.) Having abdominal fins; belonging to the Abdominales; as, abdominal fishes. Abdominal ring (Anat.), a fancied ringlike opening on each side of the abdomen, external and superior to the pubes; -- called also inguinal ring.
Abyssal zone
Zone one (z[=o]n), n. [F. zone, L. zona, Gr. zw`nh; akin to zwnny`nai to gird, Lith. j[*u]sta a girdle, j[*u]sti to gird, Zend y[=a]h.] 1. A girdle; a cincture. [Poetic] An embroidered zone surrounds her waist. --Dryden. Loose were her tresses seen, her zone unbound. --Collins. 2. (Geog.) One of the five great divisions of the earth, with respect to latitude and temperature. Note: The zones are five: the torrid zone, extending from tropic to tropic 46[deg] 56[min], or 23[deg] 28[min] on each side of the equator; two temperate or variable zones, situated between the tropics and the polar circles; and two frigid zones, situated between the polar circles and the poles. Commerce . . . defies every wind, outrides every tempest, and invades. --Bancroft. 3. (Math.) The portion of the surface of a sphere included between two parallel planes; the portion of a surface of revolution included between two planes perpendicular to the axis. --Davies & Peck (Math. Dict.) 4. (Nat. Hist.) (a) A band or stripe extending around a body. (b) A band or area of growth encircling anything; as, a zone of evergreens on a mountain; the zone of animal or vegetable life in the ocean around an island or a continent; the Alpine zone, that part of mountains which is above the limit of tree growth. 5. (Crystallog.) A series of planes having mutually parallel intersections. 6. Circuit; circumference. [R.] --Milton. Abyssal zone. (Phys. Geog.) See under Abyssal. Zone axis (Crystallog.), a straight line passing through the center of a crystal, to which all the planes of a given zone are parallel.
Abyssal zone
Abyssal A*byss"al, a. [Cf. Abysmal.] Belonging to, or resembling, an abyss; unfathomable. Abyssal zone (Phys. Geog.), one of the belts or zones into which Sir E. Forbes divides the bottom of the sea in describing its plants, animals, etc. It is the one furthest from the shore, embracing all beyond one hundred fathoms deep. Hence, abyssal animals, plants, etc.
Accidental chords
Accidental Ac`ci*den"tal, a. [Cf. F. accidentel, earlier accidental.] 1. Happening by chance, or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit. 2. Nonessential; not necessary belonging; incidental; as, are accidental to a play. Accidental chords (Mus.), those which contain one or more tones foreign to their proper harmony. Accidental colors (Opt.), colors depending on the hypersensibility of the retina of the eye for complementary colors. They are purely subjective sensations of color which often result from the contemplation of actually colored bodies. Accidental point (Persp.), the point in which a right line, drawn from the eye, parallel to a given right line, cuts the perspective plane; so called to distinguish it from the principal point, or point of view, where a line drawn from the eye perpendicular to the perspective plane meets this plane. Accidental lights (Paint.), secondary lights; effects of light other than ordinary daylight, such as the rays of the sun darting through a cloud, or between the leaves of trees; the effect of moonlight, candlelight, or burning bodies. --Fairholt. Syn: Casual; fortuitous; contingent; occasional; adventitious. Usage: Accidental, Incidental, Casual, Fortuitous, Contingent. We speak of a thing as accidental when it falls out as by chance, and not in the regular course of things; as, an accidental meeting, an accidental advantage, etc. We call a thing incidental when it falls, as it were, into some regular course of things, but is secondary, and forms no essential part thereof; as, an incremental remark, an incidental evil, an incidental benefit. We speak of a thing as casual, when it falls out or happens, as it were, by mere chance, without being prearranged or premeditated; as, a casual remark or encounter; a casual observer. An idea of the unimportant is attached to what is casual. Fortuitous is applied to what occurs without any known cause, and in opposition to what has been foreseen; as, a fortuitous concourse of atoms. We call a thing contingent when it is such that, considered in itself, it may or may not happen, but is dependent for its existence on something else; as, the time of my coming will be contingent on intelligence yet to be received.
Accidental color
Color Col"or, n. [Written also colour.] [OF. color, colur, colour, F. couleur, L. color; prob. akin to celare to conceal (the color taken as that which covers). See Helmet.] 1. A property depending on the relations of light to the eye, by which individual and specific differences in the hues and tints of objects are apprehended in vision; as, gay colors; sad colors, etc. Note: The sensation of color depends upon a peculiar function of the retina or optic nerve, in consequence of which rays of light produce different effects according to the length of their waves or undulations, waves of a certain length producing the sensation of red, shorter waves green, and those still shorter blue, etc. White, or ordinary, light consists of waves of various lengths so blended as to produce no effect of color, and the color of objects depends upon their power to absorb or reflect a greater or less proportion of the rays which fall upon them. 2. Any hue distinguished from white or black. 3. The hue or color characteristic of good health and spirits; ruddy complexion. Give color to my pale cheek. --Shak. 4. That which is used to give color; a paint; a pigment; as, oil colors or water colors. 5. That which covers or hides the real character of anything; semblance; excuse; disguise; appearance. They had let down the boat into the sea, under color as though they would have cast anchors out of the foreship. --Acts xxvii. 30. That he should die is worthy policy; But yet we want a color for his death. --Shak. 6. Shade or variety of character; kind; species. Boys and women are for the most part cattle of this color. --Shak. 7. A distinguishing badge, as a flag or similar symbol (usually in the plural); as, the colors or color of a ship or regiment; the colors of a race horse (that is, of the cap and jacket worn by the jockey). In the United States each regiment of infantry and artillery has two colors, one national and one regimental. --Farrow. 8. (Law) An apparent right; as where the defendant in trespass gave to the plaintiff an appearance of title, by stating his title specially, thus removing the cause from the jury to the court. --Blackstone. Note: Color is express when it is averred in the pleading, and implied when it is implied in the pleading. Body color. See under Body. Color blindness, total or partial inability to distinguish or recognize colors. See Daltonism. Complementary color, one of two colors so related to each other that when blended together they produce white light; -- so called because each color makes up to the other what it lacks to make it white. Artificial or pigment colors, when mixed, produce effects differing from those of the primary colors, in consequence of partial absorption. Of color (as persons, races, etc.), not of the white race; -- commonly meaning, esp. in the United States, of negro blood, pure or mixed. Primary colors, those developed from the solar beam by the prism, viz., red, orange, yellow, green, blue, indigo, and violet, which are reduced by some authors to three, -- red, green, and violet-blue. These three are sometimes called fundamental colors. Subjective or Accidental color, a false or spurious color seen in some instances, owing to the persistence of the luminous impression upon the retina, and a gradual change of its character, as where a wheel perfectly white, and with a circumference regularly subdivided, is made to revolve rapidly over a dark object, the teeth of the wheel appear to the eye of different shades of color varying with the rapidity of rotation. See Accidental colors, under Accidental.
Accidental colors
Accidental Ac`ci*den"tal, a. [Cf. F. accidentel, earlier accidental.] 1. Happening by chance, or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit. 2. Nonessential; not necessary belonging; incidental; as, are accidental to a play. Accidental chords (Mus.), those which contain one or more tones foreign to their proper harmony. Accidental colors (Opt.), colors depending on the hypersensibility of the retina of the eye for complementary colors. They are purely subjective sensations of color which often result from the contemplation of actually colored bodies. Accidental point (Persp.), the point in which a right line, drawn from the eye, parallel to a given right line, cuts the perspective plane; so called to distinguish it from the principal point, or point of view, where a line drawn from the eye perpendicular to the perspective plane meets this plane. Accidental lights (Paint.), secondary lights; effects of light other than ordinary daylight, such as the rays of the sun darting through a cloud, or between the leaves of trees; the effect of moonlight, candlelight, or burning bodies. --Fairholt. Syn: Casual; fortuitous; contingent; occasional; adventitious. Usage: Accidental, Incidental, Casual, Fortuitous, Contingent. We speak of a thing as accidental when it falls out as by chance, and not in the regular course of things; as, an accidental meeting, an accidental advantage, etc. We call a thing incidental when it falls, as it were, into some regular course of things, but is secondary, and forms no essential part thereof; as, an incremental remark, an incidental evil, an incidental benefit. We speak of a thing as casual, when it falls out or happens, as it were, by mere chance, without being prearranged or premeditated; as, a casual remark or encounter; a casual observer. An idea of the unimportant is attached to what is casual. Fortuitous is applied to what occurs without any known cause, and in opposition to what has been foreseen; as, a fortuitous concourse of atoms. We call a thing contingent when it is such that, considered in itself, it may or may not happen, but is dependent for its existence on something else; as, the time of my coming will be contingent on intelligence yet to be received.
Accidental Common Vocal
Chord Chord, n. [L chorda a gut, a string made of a gut, Gr. ?. In the sense of a string or small rope, in general, it is written cord. See Cord.] 1. The string of a musical instrument. --Milton. 2. (Mus.) A combination of tones simultaneously performed, producing more or less perfect harmony, as, the common chord. 3. (Geom.) A right line uniting the extremities of the arc of a circle or curve. 4. (Anat.) A cord. See Cord, n., 4. 5. (Engin.) The upper or lower part of a truss, usually horizontal, resisting compression or tension. --Waddell. Accidental, Common, & Vocal chords. See under Accidental, Common, and Vocal. Chord of an arch. See Illust. of Arch. Chord of curvature, a chord drawn from any point of a curve, in the circle of curvature for that point. Scale of chords. See Scale.
Accidental lights
Accidental Ac`ci*den"tal, a. [Cf. F. accidentel, earlier accidental.] 1. Happening by chance, or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit. 2. Nonessential; not necessary belonging; incidental; as, are accidental to a play. Accidental chords (Mus.), those which contain one or more tones foreign to their proper harmony. Accidental colors (Opt.), colors depending on the hypersensibility of the retina of the eye for complementary colors. They are purely subjective sensations of color which often result from the contemplation of actually colored bodies. Accidental point (Persp.), the point in which a right line, drawn from the eye, parallel to a given right line, cuts the perspective plane; so called to distinguish it from the principal point, or point of view, where a line drawn from the eye perpendicular to the perspective plane meets this plane. Accidental lights (Paint.), secondary lights; effects of light other than ordinary daylight, such as the rays of the sun darting through a cloud, or between the leaves of trees; the effect of moonlight, candlelight, or burning bodies. --Fairholt. Syn: Casual; fortuitous; contingent; occasional; adventitious. Usage: Accidental, Incidental, Casual, Fortuitous, Contingent. We speak of a thing as accidental when it falls out as by chance, and not in the regular course of things; as, an accidental meeting, an accidental advantage, etc. We call a thing incidental when it falls, as it were, into some regular course of things, but is secondary, and forms no essential part thereof; as, an incremental remark, an incidental evil, an incidental benefit. We speak of a thing as casual, when it falls out or happens, as it were, by mere chance, without being prearranged or premeditated; as, a casual remark or encounter; a casual observer. An idea of the unimportant is attached to what is casual. Fortuitous is applied to what occurs without any known cause, and in opposition to what has been foreseen; as, a fortuitous concourse of atoms. We call a thing contingent when it is such that, considered in itself, it may or may not happen, but is dependent for its existence on something else; as, the time of my coming will be contingent on intelligence yet to be received.
Accidental point
Accidental Ac`ci*den"tal, a. [Cf. F. accidentel, earlier accidental.] 1. Happening by chance, or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit. 2. Nonessential; not necessary belonging; incidental; as, are accidental to a play. Accidental chords (Mus.), those which contain one or more tones foreign to their proper harmony. Accidental colors (Opt.), colors depending on the hypersensibility of the retina of the eye for complementary colors. They are purely subjective sensations of color which often result from the contemplation of actually colored bodies. Accidental point (Persp.), the point in which a right line, drawn from the eye, parallel to a given right line, cuts the perspective plane; so called to distinguish it from the principal point, or point of view, where a line drawn from the eye perpendicular to the perspective plane meets this plane. Accidental lights (Paint.), secondary lights; effects of light other than ordinary daylight, such as the rays of the sun darting through a cloud, or between the leaves of trees; the effect of moonlight, candlelight, or burning bodies. --Fairholt. Syn: Casual; fortuitous; contingent; occasional; adventitious. Usage: Accidental, Incidental, Casual, Fortuitous, Contingent. We speak of a thing as accidental when it falls out as by chance, and not in the regular course of things; as, an accidental meeting, an accidental advantage, etc. We call a thing incidental when it falls, as it were, into some regular course of things, but is secondary, and forms no essential part thereof; as, an incremental remark, an incidental evil, an incidental benefit. We speak of a thing as casual, when it falls out or happens, as it were, by mere chance, without being prearranged or premeditated; as, a casual remark or encounter; a casual observer. An idea of the unimportant is attached to what is casual. Fortuitous is applied to what occurs without any known cause, and in opposition to what has been foreseen; as, a fortuitous concourse of atoms. We call a thing contingent when it is such that, considered in itself, it may or may not happen, but is dependent for its existence on something else; as, the time of my coming will be contingent on intelligence yet to be received.
Acidulous mineral waters
Acidulous A*cid"u*lous, a. [L. acidulus, dim. of acidus. See Acid.] Slightly sour; sub-acid; sourish; as, an acidulous tincture. --E. Burke. Acidulous mineral waters, such as contain carbonic anhydride.
acropetal botryose centripetal indefinite inflorescence
Indeterminate In`de*ter"mi*nate, a. [L. indeterminatus.] Not determinate; not certain or fixed; indefinite; not precise; as, an indeterminate number of years. --Paley. Indeterminate analysis (Math.), that branch of analysis which has for its object the solution of indeterminate problems. Indeterminate coefficients (Math.), coefficients arbitrarily assumed for convenience of calculation, or to facilitate some artifice of analysis. Their values are subsequently determined. Indeterminate equation (Math.), an equation in which the unknown quantities admit of an infinite number of values, or sets of values. A group of equations is indeterminate when it contains more unknown quantities than there are equations. Indeterminate inflorescence (Bot.), a mode of inflorescence in which the flowers all arise from axillary buds, the terminal bud going on to grow and sometimes continuing the stem indefinitely; -- called also acropetal, botryose, centripetal, & indefinite inflorescence. --Gray. Indeterminate problem (Math.), a problem which admits of an infinite number of solutions, or one in which there are fewer imposed conditions than there are unknown or required results. Indeterminate quantity (Math.), a quantity which has no fixed value, but which may be varied in accordance with any proposed condition. Indeterminate series (Math.), a series whose terms proceed by the powers of an indeterminate quantity, sometimes also with indeterminate exponents, or indeterminate coefficients. -- In`de*ter"mi*nate*ly adv. -- In`de*ter"mi*nate*ness, n.
Actual cautery
Actual Ac"tu*al (#; 135), a. [OE. actuel, F. actuel, L. actualis, fr. agere to do, act.] 1. Involving or comprising action; active. [Obs.] Her walking and other actual performances. --Shak. Let your holy and pious intention be actual; that is . . . by a special prayer or action, . . . given to God. --Jer. Taylor. 2. Existing in act or reality; really acted or acting; in fact; real; -- opposed to potential, possible, virtual, speculative, conceivable, theoretical, or nominal; as, the actual cost of goods; the actual case under discussion. 3. In action at the time being; now exiting; present; as the actual situation of the country. Actual cautery. See under Cautery. Actual sin (Theol.), that kind of sin which is done by ourselves in contradistinction to ``original sin.' Syn: Real; genuine; positive; certain. See Real.
Actual cautery
Cautery Cau"ter*y, n.; pl. Cauteries. [L. cauterium, Gr. ?. See Cauter.] 1. (Med.) A burning or searing, as of morbid flesh, with a hot iron, or by application of a caustic that will burn, corrode, or destroy animal tissue. 2. The iron of other agent in cauterizing. Actual cautery, a substance or agent (as a hot iron) which cauterizes or sears by actual heat; or the burning so effected. Potential cautery, a substance which cauterizes by chemical action; as, lunar caustic; also, the cauterizing produced by such substance.
Actual sin
Actual Ac"tu*al (#; 135), a. [OE. actuel, F. actuel, L. actualis, fr. agere to do, act.] 1. Involving or comprising action; active. [Obs.] Her walking and other actual performances. --Shak. Let your holy and pious intention be actual; that is . . . by a special prayer or action, . . . given to God. --Jer. Taylor. 2. Existing in act or reality; really acted or acting; in fact; real; -- opposed to potential, possible, virtual, speculative, conceivable, theoretical, or nominal; as, the actual cost of goods; the actual case under discussion. 3. In action at the time being; now exiting; present; as the actual situation of the country. Actual cautery. See under Cautery. Actual sin (Theol.), that kind of sin which is done by ourselves in contradistinction to ``original sin.' Syn: Real; genuine; positive; certain. See Real.
Admiral shell
Admiral Ad"mi*ral, n. [OE. amiral, admiral, OF. amiral, ultimately fr. Ar. am[=i]r-al-bahr commander of the sea; Ar. am[=i]r is commander, al is the Ar. article, and am[=i]r-al, heard in different titles, was taken as one word. Early forms of the word show confusion with L. admirabilis admirable, fr. admirari to admire. It is said to have been introduced into Europe by the Genoese or Venetians, in the 12th or 13th century. Cf. Ameer, Emir.] 1. A naval officer of the highest rank; a naval officer of high rank, of which there are different grades. The chief gradations in rank are admiral, vice admiral, and rear admiral. The admiral is the commander in chief of a fleet or of fleets. 2. The ship which carries the admiral; also, the most considerable ship of a fleet. Like some mighty admiral, dark and terrible, bearing down upon his antagonist with all his canvas straining to the wind, and all his thunders roaring from his broadsides. --E. Everett. 3. (Zo["o]l.) A handsome butterfly (Pyrameis Atalanta) of Europe and America. The larva feeds on nettles. Admiral shell (Zo["o]l.), the popular name of an ornamental cone shell (Conus admiralis). Lord High Admiral, a great officer of state, who (when this rare dignity is conferred) is at the head of the naval administration of Great Britain.
Aerial acid
Aerial A*["e]"ri*al, a. [L. a["e]rius. See Air.] 1. Of or pertaining to the air, or atmosphere; inhabiting or frequenting the air; produced by or found in the air; performed in the air; as, a["e]rial regions or currents. ``A["e]rial spirits.' --Milton. ``A["e]rial voyages.' --Darwin. 2. Consisting of air; resembling, or partaking of the nature of air. Hence: Unsubstantial; unreal. 3. Rising aloft in air; high; lofty; as, a["e]rial spires. 4. Growing, forming, or existing in the air, as opposed to growing or existing in earth or water, or underground; as, a["e]rial rootlets, a["e]rial plants. --Gray. 5. Light as air; ethereal. A["e]rial acid, carbonic acid. [Obs.] --Ure. A["e]rial perspective. See Perspective.
Aerial perspective
Aerial A*["e]"ri*al, a. [L. a["e]rius. See Air.] 1. Of or pertaining to the air, or atmosphere; inhabiting or frequenting the air; produced by or found in the air; performed in the air; as, a["e]rial regions or currents. ``A["e]rial spirits.' --Milton. ``A["e]rial voyages.' --Darwin. 2. Consisting of air; resembling, or partaking of the nature of air. Hence: Unsubstantial; unreal. 3. Rising aloft in air; high; lofty; as, a["e]rial spires. 4. Growing, forming, or existing in the air, as opposed to growing or existing in earth or water, or underground; as, a["e]rial rootlets, a["e]rial plants. --Gray. 5. Light as air; ethereal. A["e]rial acid, carbonic acid. [Obs.] --Ure. A["e]rial perspective. See Perspective.
Aerial railway
Aerial railway A*["e]`ri*al rail"way` (a) A stretched wire or rope elevated above the ground and forming a way along which a trolley may travel, for conveying a load suspended from the trolley. (b) An elevated cableway.
Aerial roots
2. An edible or esculent root, especially of such plants as produce a single root, as the beet, carrot, etc.; as, the root crop. 3. That which resembles a root in position or function, esp. as a source of nourishment or support; that from which anything proceeds as if by growth or development; as, the root of a tooth, a nail, a cancer, and the like. Specifically: (a) An ancestor or progenitor; and hence, an early race; a stem. They were the roots out of which sprang two distinct people. --Locke. (b) A primitive form of speech; one of the earliest terms employed in language; a word from which other words are formed; a radix, or radical. (c) The cause or occasion by which anything is brought about; the source. ``She herself . . . is root of bounty.' --Chaucer. The love of money is a root of all kinds of evil. --1 Tim. vi. 10 (rev. Ver.) (d) (Math.) That factor of a quantity which when multiplied into itself will produce that quantity; thus, 3 is a root of 9, because 3 multiplied into itself produces 9; 3 is the cube root of 27. (e) (Mus.) The fundamental tone of any chord; the tone from whose harmonics, or overtones, a chord is composed. --Busby. (f) The lowest place, position, or part. ``Deep to the roots of hell.' --Milton. ``The roots of the mountains.' --Southey. 4. (Astrol.) The time which to reckon in making calculations. When a root is of a birth yknowe [known]. --Chaucer. A["e]rial roots. (Bot.) (a) Small roots emitted from the stem of a plant in the open air, which, attaching themselves to the bark of trees, etc., serve to support the plant. (b) Large roots growing from the stem, etc., which descend and establish themselves in the soil. See Illust. of Mangrove. Multiple primary root (Bot.), a name given to the numerous roots emitted from the radicle in many plants, as the squash. Primary root (Bot.), the central, first-formed, main root, from which the rootlets are given off. Root and branch, every part; wholly; completely; as, to destroy an error root and branch. Root-and-branch men, radical reformers; -- a designation applied to the English Independents (1641). See Citation under Radical, n., 2. Root barnacle (Zo["o]l.), one of the Rhizocephala. Root hair (Bot.), one of the slender, hairlike fibers found on the surface of fresh roots. They are prolongations of the superficial cells of the root into minute tubes. --Gray. Root leaf (Bot.), a radical leaf. See Radical, a., 3 (b) . Root louse (Zo["o]l.), any plant louse, or aphid, which lives on the roots of plants, as the Phylloxera of the grapevine. See Phylloxera. Root of an equation (Alg.), that value which, substituted for the unknown quantity in an equation, satisfies the equation. Root of a nail (Anat.), the part of a nail which is covered by the skin. Root of a tooth (Anat.), the part of a tooth contained in the socket and consisting of one or more fangs. Secondary roots (Bot.), roots emitted from any part of the plant above the radicle. To strike root, To take root, to send forth roots; to become fixed in the earth, etc., by a root; hence, in general, to become planted, fixed, or established; to increase and spread; as, an opinion takes root. ``The bended twigs take root.' --Milton.
Aerial sickness
Aerial sickness A*["e]"ri*al sick"ness A sickness felt by a["e]ronauts due to high speed of flights and rapidity in changing altitudes, combining some symptoms of mountain sickness and some of seasickness.
Age of coal plants
Coal Coal, n. [AS. col; akin to D. kool, OHG. chol, cholo, G. kohle, Icel. kol, pl., Sw. kol, Dan. kul; cf. Skr. jval to burn. Cf. Kiln, Collier.] 1. A thoroughly charred, and extinguished or still ignited, fragment from wood or other combustible substance; charcoal. 2. (Min.) A black, or brownish black, solid, combustible substance, dug from beds or veins in the earth to be used for fuel, and consisting, like charcoal, mainly of carbon, but more compact, and often affording, when heated, a large amount of volatile matter. Note: This word is often used adjectively, or as the first part of self-explaining compounds; as, coal-black; coal formation; coal scuttle; coal ship. etc. Note: In England the plural coals is used, for the broken mineral coal burned in grates, etc.; as, to put coals on the fire. In the United States the singular in a collective sense is the customary usage; as, a hod of coal. Age of coal plants. See Age of Acrogens, under Acrogen. Anthracite or Glance coal. See Anthracite. Bituminous coal. See under Bituminous. Blind coal. See under Blind. Brown coal, or Lignite. See Lignite. Caking coal, a bituminous coal, which softens and becomes pasty or semi-viscid when heated. On increasing the heat, the volatile products are driven off, and a coherent, grayish black, cellular mass of coke is left. Cannel coal, a very compact bituminous coal, of fine texture and dull luster. See Cannel coal. Coal bed (Geol.), a layer or stratum of mineral coal. Coal breaker, a structure including machines and machinery adapted for crushing, cleansing, and assorting coal. Coal field (Geol.), a region in which deposits of coal occur. Such regions have often a basinlike structure, and are hence called coal basins. See Basin. Coal gas, a variety of carbureted hydrogen, procured from bituminous coal, used in lighting streets, houses, etc., and for cooking and heating. Coal heaver, a man employed in carrying coal, and esp. in putting it in, and discharging it from, ships. Coal measures. (Geol.) (a) Strata of coal with the attendant rocks. (b) A subdivision of the carboniferous formation, between the millstone grit below and the Permian formation above, and including nearly all the workable coal beds of the world. Coal oil, a general name for mineral oils; petroleum. Coal plant (Geol.), one of the remains or impressions of plants found in the strata of the coal formation. Coal tar. See in the Vocabulary. To haul over the coals, to call to account; to scold or censure. [Colloq.] Wood coal. See Lignite.
Agricultural ant
Agricultural Ag`ri*cul"tur*al, a. Of or pertaining to agriculture; connected with, or engaged in, tillage; as, the agricultural class; agricultural implements, wages, etc. -- Ag`ri*cul"tur*al*ly, adv. Agricultural ant (Zo["o]l.), a species of ant which gathers and stores seeds of grasses, for food. The remarkable species (Myrmica barbata) found in Texas clears circular areas and carefully cultivates its favorite grain, known as ant rice.
agricultural ant
Harvesting Har"vest*ing, a. & n., from Harvest, v. t. Harvesting ant (Zo["o]l.), any species of ant which gathers and stores up seeds for food. Many species are known. Note: The species found in Southern Europe and Palestine are Aphenogaster structor and A. barbara; that of Texas, called agricultural ant, is Pogonomyrmex barbatus or Myrmica molifaciens; that of Florida is P. crudelis. See Agricultural ant, under Agricultural.
Al segno
Al segno Al` se"gno [It., to the mark or sign.](Mus.) A direction for the performer to return and recommence from the sign ?.
Ammoniacal engine
Ammoniac Am*mo"ni*ac, Ammoniacal Am`mo*ni"a*cal, a. Of or pertaining to ammonia, or possessing its properties; as, an ammoniac salt; ammoniacal gas. Ammoniacal engine, an engine in which the vapor of ammonia is used as the motive force. Sal ammoniac [L. sal ammoniacus], the salt usually called chloride of ammonium, and formerly muriate of ammonia.
Ammoniacal fermentation
Ammoniacal fermentation Am`mo*ni"a*cal fer`men*ta"tion Any fermentation process by which ammonia is formed, as that by which urea is converted into ammonium carbonate when urine is exposed to the air.
Ammoniacal fermentation
2. A state of agitation or excitement, as of the intellect or the feelings. It puts the soul to fermentation and activity. --Jer. Taylor. A univesal fermentation of human thought and faith. --C. Kingsley. Acetous, or Acetic, fermentation, a form of oxidation in which alcohol is converted into vinegar or acetic acid by the agency of a specific fungus or ferment (Mycoderma aceti). The process involves two distinct reactions, in which the oxygen of the air is essential. An intermediate product, aldehyde, is formed in the first process. 1. C2H6O + O = H2O + C2H4O Note: Alcohol. Water. Aldehyde. 2. C2H4O + O = C2H4O2 Note: Aldehyde. Acetic acid. Alcoholic fermentation, the fermentation which saccharine bodies undergo when brought in contact with the yeast plant or Torula. The sugar is converted, either directly or indirectly, into alcohol and carbonic acid, the rate of action being dependent on the rapidity with which the Torul[ae] develop. Ammoniacal fermentation, the conversion of the urea of the urine into ammonium carbonate, through the growth of the special urea ferment. CON2H4 + 2H2O = (NH4)2CO3 Note: Urea. Water. Ammonium carbonate. Note: Whenever urine is exposed to the air in open vessels for several days it undergoes this alkaline fermentation. Butyric fermentation, the decomposition of various forms of organic matter, through the agency of a peculiar worm-shaped vibrio, with formation of more or less butyric acid. It is one of the many forms of fermentation that collectively constitute putrefaction. See Lactic fermentation. Fermentation by an unorganized ferment or enzyme. Fermentations of this class are purely chemical reactions, in which the ferment acts as a simple catalytic agent. Of this nature are the decomposition or inversion of cane sugar into levulose and dextrose by boiling with dilute acids, the conversion of starch into dextrin and sugar by similar treatment, the conversion of starch into like products by the action of diastase of malt or ptyalin of saliva, the conversion of albuminous food into peptones and other like products by the action of pepsin-hydrochloric acid of the gastric juice or by the ferment of the pancreatic juice. Fermentation theory of disease (Biol. & Med.), the theory that most if not all, infectious or zymotic disease are caused by the introduction into the organism of the living germs of ferments, or ferments already developed (organized ferments), by which processes of fermentation are set up injurious to health. See Germ theory. Glycerin fermentation, the fermentation which occurs on mixing a dilute solution of glycerin with a peculiar species of schizomycetes and some carbonate of lime, and other matter favorable to the growth of the plant, the glycerin being changed into butyric acid, caproic acid, butyl, and ethyl alcohol. With another form of bacterium (Bacillus subtilis) ethyl alcohol and butyric acid are mainly formed. Lactic fermentation, the transformation of milk sugar or other saccharine body into lactic acid, as in the souring of milk, through the agency of a special bacterium (Bacterium lactis of Lister). In this change the milk sugar, before assuming the form of lactic acid, presumably passes through the stage of glucose. C12H22O11.H2O = 4C3H6O3 Note: Hydrated milk sugar. Lactic acid. Note: In the lactic fermentation of dextrose or glucose, the lactic acid which is formed is very prone to undergo butyric fermentation after the manner indicated in the following equation: 2C3H6O3 (lactic acid) = C4H8O2 (butyric acid) + 2CO2 (carbonic acid) + 2H2 (hydrogen gas). Putrefactive fermentation. See Putrefaction.
ammoniacal water
Gas fitter, one who lays pipes and puts up fixtures for gas. Gas fitting. (a) The occupation of a gas fitter. (b) pl. The appliances needed for the introduction of gas into a building, as meters, pipes, burners, etc. Gas fixture, a device for conveying illuminating or combustible gas from the pipe to the gas-burner, consisting of an appendage of cast, wrought, or drawn metal, with tubes upon which the burners, keys, etc., are adjusted. Gas generator, an apparatus in which gas is evolved; as: (a) a retort in which volatile hydrocarbons are evolved by heat; (b) a machine in which air is saturated with the vapor of liquid hydrocarbon; a carburetor; (c) a machine for the production of carbonic acid gas, for a["e]rating water, bread, etc. --Knight. Gas jet, a flame of illuminating gas. Gas machine, an apparatus for carbureting air for use as illuminating gas. Gas meter, an instrument for recording the quantity of gas consumed in a given time, at a particular place. Gas retort, a retort which contains the coal and other materials, and in which the gas is generated, in the manufacture of gas. Gas stove, a stove for cooking or other purposes, heated by gas. Gas tar, coal tar. Gas trap, a drain trap; a sewer trap. See 4th Trap, 5. Gas washer (Gas Works), an apparatus within which gas from the condenser is brought in contact with a falling stream of water, to precipitate the tar remaining in it. --Knight. Gas water, water through which gas has been passed for purification; -- called also gas liquor and ammoniacal water, and used for the manufacture of sal ammoniac, carbonate of ammonia, and Prussian blue. --Tomlinson. Gas well, a deep boring, from which natural gas is discharged. --Raymond. Gas works, a manufactory of gas, with all the machinery and appurtenances; a place where gas is generated for lighting cities. Laughing gas. See under Laughing. Marsh gas (Chem.), a light, combustible, gaseous hydrocarbon, CH4, produced artificially by the dry distillation of many organic substances, and occurring as a natural product of decomposition in stagnant pools, whence its name. It is an abundant ingredient of ordinary illuminating gas, and is the first member of the paraffin series. Called also methane, and in coal mines, fire damp. Natural gas, gas obtained from wells, etc., in Pennsylvania, Ohio, and elsewhere, and largely used for fuel and illuminating purposes. It is chiefly derived from the Coal Measures. Olefiant gas (Chem.). See Ethylene. Water gas (Chem.), a kind of gas made by forcing steam over glowing coals, whereby there results a mixture of hydrogen and carbon monoxide. This gives a gas of intense heating power, but destitute of light-giving properties, and which is charged by passing through some volatile hydrocarbon, as gasoline.
Analytical table
Analytic An`a*lyt"ic, Analytical An`a*lyt"ic*al, a. [Gr. ?: cf. F. analytique. See Analysis.] Of or pertaining to analysis; resolving into elements or constituent parts; as, an analytical experiment; analytic reasoning; -- opposed to synthetic. Analytical or co["o]rdinate geometry. See under Geometry. Analytic language, a noninflectional language or one not characterized by grammatical endings. Analytical table (Nat. Hist.), a table in which the characteristics of the species or other groups are arranged so as to facilitate the determination of their names.

Meaning of Al from wikipedia

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