Definition of Issas. Meaning of Issas. Synonyms of Issas

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Definition of Issas

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Abscissas
Abscissa Ab*scis"sa, n.; E. pl. Abscissas, L. pl. Absciss[ae]. [L., fem. of abscissus, p. p. of absindere to cut of. See Abscind.] (Geom.) One of the elements of reference by which a point, as of a curve, is referred to a system of fixed rectilineal co["o]rdinate axes. Note: When referred to two intersecting axes, one of them called the axis of abscissas, or of X, and the other the axis of ordinates, or of Y, the abscissa of the point is the distance cut off from the axis of X by a line drawn through it and parallel to the axis of Y. When a point in space is referred to three axes having a common intersection, the abscissa may be the distance measured parallel to either of them, from the point to the plane of the other two axes. Abscissas and ordinates taken together are called co["o]rdinates. -- OX or PY is the abscissa of the point P of the curve, OY or PX its ordinate, the intersecting lines OX and OY being the axes of abscissas and ordinates respectively, and the point O their origin.
Axis of abscissas
Axis Ax"is, n.; pl. Axes. [L. axis axis, axle. See Axle.] A straight line, real or imaginary, passing through a body, on which it revolves, or may be supposed to revolve; a line passing through a body or system around which the parts are symmetrically arranged. 2. (Math.) A straight line with respect to which the different parts of a magnitude are symmetrically arranged; as, the axis of a cylinder, i. e., the axis of a cone, that is, the straight line joining the vertex and the center of the base; the axis of a circle, any straight line passing through the center. 3. (Bot.) The stem; the central part, or longitudinal support, on which organs or parts are arranged; the central line of any body. --Gray. 4. (Anat.) (a) The second vertebra of the neck, or vertebra dentata. (b) Also used of the body only of the vertebra, which is prolonged anteriorly within the foramen of the first vertebra or atlas, so as to form the odontoid process or peg which serves as a pivot for the atlas and head to turn upon. 5. (Crystallog.) One of several imaginary lines, assumed in describing the position of the planes by which a crystal is bounded. 6. (Fine Arts) The primary or secondary central line of any design. Anticlinal axis (Geol.), a line or ridge from which the strata slope downward on the two opposite sides. Synclinal axis, a line from which the strata slope upward in opposite directions, so as to form a valley. Axis cylinder (Anat.), the neuraxis or essential, central substance of a nerve fiber; -- called also axis band, axial fiber, and cylinder axis. Axis in peritrochio, the wheel and axle, one of the mechanical powers. Axis of a curve (Geom.), a straight line which bisects a system of parallel chords of a curve; called a principal axis, when cutting them at right angles, in which case it divides the curve into two symmetrical portions, as in the parabola, which has one such axis, the ellipse, which has two, or the circle, which has an infinite number. The two axes of the ellipse are the major axis and the minor axis, and the two axes of the hyperbola are the transverse axis and the conjugate axis. Axis of a lens, the straight line passing through its center and perpendicular to its surfaces. Axis of a telescope or microscope, the straight line with which coincide the axes of the several lenses which compose it. Axes of co["o]rdinates in a plane, two straight lines intersecting each other, to which points are referred for the purpose of determining their relative position: they are either rectangular or oblique. Axes of co["o]rdinates in space, the three straight lines in which the co["o]rdinate planes intersect each other. Axis of a balance, that line about which it turns. Axis of oscillation, of a pendulum, a right line passing through the center about which it vibrates, and perpendicular to the plane of vibration. Axis of polarization, the central line around which the prismatic rings or curves are arranged. --Brewster. Axis of revolution (Descriptive Geom.), a straight line about which some line or plane is revolved, so that the several points of the line or plane shall describe circles with their centers in the fixed line, and their planes perpendicular to it, the line describing a surface of revolution, and the plane a solid of revolution. Axis of symmetry (Geom.), any line in a plane figure which divides the figure into two such parts that one part, when folded over along the axis, shall coincide with the other part. Axis of the equator, ecliptic, horizon (or other circle considered with reference to the sphere on which it lies), the diameter of the sphere which is perpendicular to the plane of the circle. --Hutton. Axis of the Ionic capital (Arch.), a line passing perpendicularly through the middle of the eye of the volute. Neutral axis (Mech.), the line of demarcation between the horizontal elastic forces of tension and compression, exerted by the fibers in any cross section of a girder. Optic axis of a crystal, the direction in which a ray of transmitted light suffers no double refraction. All crystals, not of the isometric system, are either uniaxial or biaxial. Optic axis, Visual axis (Opt.), the straight line passing through the center of the pupil, and perpendicular to the surface of the eye. Radical axis of two circles (Geom.), the straight line perpendicular to the line joining their centers and such that the tangents from any point of it to the two circles shall be equal to each other. Spiral axis (Arch.), the axis of a twisted column drawn spirally in order to trace the circumvolutions without. Axis of abscissas and Axis of ordinates. See Abscissa.
Pissasphalt
Pissasphalt Pis"sas*phalt, n. [L. pissasphaltus, Gr. ?; ? pitch + ? asphalt: cf. F. pissasphalte.] (Min.) Earth pitch; a soft, black bitumen of the consistence of tar, and of a strong smell. It is inflammable, and intermediate between petroleum and asphalt. [Written also pisasphaltum, pisasphalt, etc.]

Meaning of Issas from wikipedia

- Look up Issa, issa, or -issa in Wiktionary, the free dictionary. Issa or ISSA may refer to: Issa (name), a given name and surname Kobayashi Issa (1763–1828)...
- Darrell Edward Issa (/ˈaɪsə/ EYESS-ə; born November 1, 1953) is an American businessman and politician serving as the U.S. representative for California's...
- known history the Issa where known for their military strength and viciousness, the British who came across them viewed the Issas as "one of the most...
- The French Territory of the Afars and the Issas (FTAI; French: Territoire français des Afars et des Issas) was the name given to present-day Djibouti...
- 1884 and 1967, at which became the French Territory of the Afars and the Issas. The Republic of Djibouti is its legal successor state. French Somaliland...
- released several albums under the name Issa Issa (Senegalese singer), Issa Diop, singer, songwriter, and record producer Issa, the nickname of Luttif Afif (died...
- JoIssa Rae Diop (born January 12, 1985), known professionally as Issa Rae, is an American actress, writer, and producer. She achieved recognition as the...
- presidents of the Government Council of French Territory of the Afars and the Issas, which acted as heads of government of the area of present-day Djibouti...
- It was subsequently renamed to the French Territory of the Afars and the Issas in 1967. A decade later, the Djiboutian people voted for independence, officially...
- Issa Daoud El-Issa (Arabic: عيسى داود العيسى, his surname also spelt al Issa and Elissa; 1878 – 29 June 1950) was a Palestinian poet and journalist. With...