No result for Leuco. Showing similar results...
Bignonia leucoxylonWhitewood White"wood`, n.
The soft and easily-worked wood of the tulip tree
(Liriodendron). It is much used in cabinetwork, carriage
building, etc.
Note: Several other kinds of light-colored wood are called
whitewood in various countries, as the wood of
Bignonia leucoxylon in the West Indies, of
Pittosporum bicolor in Tasmania, etc.
Whitewood bark. See the Note under Canella. Blissus leucopterusChinch Chinch, n. [Cf. Sp. chinche, fr. L. cimex.]
1. (Zo["o]l.) The bedbug (Cimex lectularius).
2. (Zo["o]l.) A bug (Blissus leucopterus), which, in the
United States, is very destructive to grass, wheat, and
other grains; -- also called chiniz, chinch bug,
chink bug. It resembles the bedbug in its disgusting
odor. Branta leucopsisBernicle Ber"ni*cle, n. [OE. bernak, bernacle; cf. OF. bernac;
prob. fr. LL. bernacula for hibernicula, bernicula, fr.
Hibernia; the birds coming from Hibernia or Ireland. Cf. 1st
Barnacle.]
A bernicle goose. [Written also barnacle.]
Bernicle goose (Zo["o]l.), a goose (Branta leucopsis), of
Arctic Europe and America. It was formerly believed that
it hatched from the cirripeds of the sea (Lepas), which
were, therefore, called barnacles, goose barnacles, or
Anatifers. The name is also applied to other related
species. See Anatifa and Cirripedia. C leucopteraSheldrake Shel"drake`, n. [Sheld + drake.]
1. (Zo["o]l.) Any one of several species of large Old World
ducks of the genus Tadorna and allied genera, especially
the European and Asiatic species. (T. cornuta, or
tadorna), which somewhat resembles a goose in form and
habit, but breeds in burrows.
Note: It has the head and neck greenish black, the breast,
sides, and forward part of the back brown, the
shoulders and middle of belly black, the speculum
green, and the bill and frontal bright red. Called also
shelduck, shellduck, sheldfowl, skeelduck,
bergander, burrow duck, and links goose.
Note: The Australian sheldrake (Tadorna radja) has the
head, neck, breast, flanks, and wing coverts white, the
upper part of the back and a band on the breast deep
chestnut, and the back and tail black. The chestnut
sheldrake of Australia (Casarca tadornoides) is
varied with black and chestnut, and has a dark green
head and neck. The ruddy sheldrake, or Braminy duck
(C. rutila), and the white-winged sheldrake (C.
leucoptera), are related Asiatic species.
2. Any one of the American mergansers.
Note: The name is also loosely applied to other ducks, as the
canvasback, and the shoveler. Gleucometer
Gleucometer Gleu*com"e*ter, n. [Gr. ? must + -meter: cf. F.
gleucom[`e]tre.]
An instrument for measuring the specific gravity and
ascertaining the quantity of sugar contained in must.
H leucocephalusStilt Stilt, n. [OE. stilte; akin to Dan. stylte, Sw. stylta,
LG. & D. stelt, OHG. stelza, G. stelze, and perh. to E.
stout.]
1. A pole, or piece of wood, constructed with a step or loop
to raise the foot above the ground in walking. It is
sometimes lashed to the leg, and sometimes prolonged
upward so as to be steadied by the hand or arm.
Ambition is but avarice on stilts, and masked.
--Landor.
2. A crutch; also, the handle of a plow. [Prov. Eng.]
--Halliwell.
3. (Zo["o]l.) Any species of limicoline birds belonging to
Himantopus and allied genera, in which the legs are
remarkably long and slender. Called also longshanks,
stiltbird, stilt plover, and lawyer.
Note: The American species (Himantopus Mexicanus) is well
known. The European and Asiatic stilt (H. candidus)
is usually white, except the wings and interscapulars,
which are greenish black. The white-headed stilt (H.
leucocephalus) and the banded stilt (Cladorhynchus
pectoralis) are found in Australia.
Stilt plover (Zo["o]l.), the stilt.
Stilt sandpiper (Zo["o]l.), an American sandpiper
(Micropalama himantopus) having long legs. The bill is
somewhat expanded at the tip. Haliaeetus leucocephalusEagle Ea"gle, n. [OE. egle, F. aigle, fr. L. aquila; prob.
named from its color, fr. aquilus dark-colored, brown; cf.
Lith. aklas blind. Cf. Aquiline.]
1. (Zo["o]l.) Any large, rapacious bird of the Falcon family,
esp. of the genera Aquila and Hali[ae]etus. The eagle
is remarkable for strength, size, graceful figure,
keenness of vision, and extraordinary flight. The most
noted species are the golden eagle (Aquila
chrysa["e]tus); the imperial eagle of Europe (A.
mogilnik or imperialis); the American bald eagle
(Hali[ae]etus leucocephalus); the European sea eagle
(H. albicilla); and the great harpy eagle (Thrasaetus
harpyia). The figure of the eagle, as the king of birds,
is commonly used as an heraldic emblem, and also for
standards and emblematic devices. See Bald eagle,
Harpy, and Golden eagle.
2. A gold coin of the United States, of the value of ten
dollars.
3. (Astron.) A northern constellation, containing Altair, a
star of the first magnitude. See Aquila.
4. The figure of an eagle borne as an emblem on the standard
of the ancient Romans, or so used upon the seal or
standard of any people.
Though the Roman eagle shadow thee. --Tennyson.
Note: Some modern nations, as the United States, and France
under the Bonapartes, have adopted the eagle as their
national emblem. Russia, Austria, and Prussia have for
an emblem a double-headed eagle.
Bald eagle. See Bald eagle.
Bold eagle. See under Bold.
Double eagle, a gold coin of the United States worth twenty
dollars.
Eagle hawk (Zo["o]l.), a large, crested, South American
hawk of the genus Morphnus.
Eagle owl (Zo["o]l.), any large owl of the genus Bubo,
and allied genera; as the American great horned owl (Bubo
Virginianus), and the allied European species (B.
maximus). See Horned owl.
Eagle ray (Zo["o]l.), any large species of ray of the genus
Myliobatis (esp. M. aquila).
Eagle vulture (Zo["o]l.), a large West African bid
(Gypohierax Angolensis), intermediate, in several
respects, between the eagles and vultures. Haliaeetus leucocephalusBald eagle Bald" ea"gle (Zo["o]l.)
The white-headed eagle (Hali[ae]etus leucocephalus) of
America. The young, until several years old, lack the white
feathers on the head.
Note: The bald eagle is represented in the coat of arms, and
on the coins, of the United States. Hesperomys leucopusMouse Mouse (mous), n.; pl. Mice (m[imac]s). [OE. mous, mus,
AS. m[=u]s, pl. m[=y]s; akin to D. muis, G. maus, OHG. &
Icel. m[=u]s, Dan. muus, Sw. mus, Russ. muishe, L. mus, Gr.
my^s, Skr. m[=u]sh mouse, mush to steal. [root]277. Cf.
Muscle, Musk.]
1. (Zo["o]l.) Any one of numerous species of small rodents
belonging to the genus Mus and various related genera of
the family Murid[ae]. The common house mouse (Mus
musculus) is found in nearly all countries. The American
white-footed, or deer, mouse (Hesperomys leucopus)
sometimes lives in houses. See Dormouse, Meadow mouse,
under Meadow, and Harvest mouse, under Harvest. Icterus leucopteryxBanana Ba*na"na, n. [Sp. banana, name of the fruit.] (Bot.)
A perennial herbaceous plant of almost treelike size (Musa
sapientum); also, its edible fruit. See Musa.
Note: The banana has a soft, herbaceous stalk, with leaves of
great length and breadth. The flowers grow in bunches,
covered with a sheath of a green or purple color; the
fruit is five or six inches long, and over an inch in
diameter; the pulp is soft, and of a luscious taste,
and is eaten either raw or cooked. This plant is a
native of tropical countries, and furnishes an
important article of food.
Banana bird (Zo["o]l.), a small American bird (Icterus
leucopteryx), which feeds on the banana.
Banana quit (Zo["o]l.), a small bird of tropical America,
of the genus Certhiola, allied to the creepers. Leuco-
Leuco- Leu"co- (l[=u]"k[-o]-), Leuc- Leuc- (l[=u]k-). [Gr.
leyko`s white.]
A combining form signifying white, colorless; specif.
(Chem.), denoting an extensive series of colorless organic
compounds, obtained by reduction from certain other colored
compounds; as, leucaniline, leucaurin, etc.
Leucocyte
Leucocyte Leu"co*cyte (l[=u]"k[-o]*s[imac]t), n. [Leuco- + Gr.
ky`tos a hollow vessel.] (Physiol.)
A colorless corpuscle, as one of the white blood corpuscles,
or those found in lymph, marrow of bone, connective tissue,
etc.
Note: They all consist of more or less spherical masses of
protoplasm, without any surrounding membrane or wall,
and are capable of motion.
Leucocythaemia
Leucocythaemia Leu`co*cy*th[ae]"mi*a Leucocythemia
Leu`co*cy*the"mi*a ](l[=u]`k[-o]*s[-i]*th[=e]"m[i^]*[.a]), n.
[NL., fr. Gr. leyko`s white + ky`tos a hollow vessel + a"i^ma
blood.] (Med.)
A disease in which the white corpuscles of the blood are
largely increased in number, and there is enlargement of the
spleen, or the lymphatic glands; leuch[ae]mia.
Leucocythemia
Leucocythaemia Leu`co*cy*th[ae]"mi*a Leucocythemia
Leu`co*cy*the"mi*a ](l[=u]`k[-o]*s[-i]*th[=e]"m[i^]*[.a]), n.
[NL., fr. Gr. leyko`s white + ky`tos a hollow vessel + a"i^ma
blood.] (Med.)
A disease in which the white corpuscles of the blood are
largely increased in number, and there is enlargement of the
spleen, or the lymphatic glands; leuch[ae]mia.
Leucocytogenesis
Leucocytogenesis Leu`co*cy`to*gen"e*sis
(-s[imac]`t[-o]*j[e^]n"[-e]*s[i^]s), n. [Leucocyte +
genesis.] (Physiol.)
The formation of leucocytes.
Leucoethiopic
Leucoethiopic Leu`co*e`thi*op"ic (-[=e]`th[i^]*[o^]p"[i^]k),
a. [Leuco- + Ethiopic.]
White and black; -- said of a white animal of a black
species, or the albino of the negro race.
LeucoethiopsLeucoethiops Leu`co*e"thi*ops (-[=e]"th[i^]*[o^]ps), n.
[Leuco- + Aethiops.]
An albino. [Also written leuc[oe]thiops.] leucoethiopsLeucoethiops Leu`co*e"thi*ops (-[=e]"th[i^]*[o^]ps), n.
[Leuco- + Aethiops.]
An albino. [Also written leuc[oe]thiops.] LeucolineLeucoline Leu"co*line (l[=u]"k[-o]*l[i^]n or -l[=e]n), n.
[Leuc- + L. oleum oil.] (Chem.)
A nitrogenous organic base from coal tar, and identical with
quinoline. Cf. Quinoline. LeucomaLeucoma Leu*co"ma (l[-u]*k[=o]"m[.a]), n. [NL., fr. Gr.
ley`kwma, fr. leyko`s white.] (Med.)
A white opacity in the cornea of the eye; -- called also
albugo. LeucomaineLeucomaine Leu*co"ma*ine (l[-u]*k[=o]"m[.a]*[i^]n or -[=e]n),
n. [Leuco- + -maine, as in ptomaine.] (Physiol. Chem.)
An animal base or alkaloid, appearing in the tissue during
life; hence, a vital alkaloid, as distinguished from a
ptomaine or cadaveric poison. Leuconic
Leuconic Leu*con"ic (-k[o^]n"[i^]k), a. [Leuc- + croconic.]
(Chem.)
Pertaining to, or designating, a complex organic acid,
obtained as a yellowish white gum by the oxidation of
croconic acid.
Leucopathy
Leucopathy Leu*cop"a*thy (l[-u]*k[o^]p"[.a]*th[y^]), n.
[Leuco- + Gr. pa`schein, paqei^n to suffer.]
The state of an albino, or of a white child of black parents.
LeucophaneLeucophane Leu"co*phane (l[=u]"k[-o]*f[=a]n), n. [Gr.
leykofanh`s appearing bright or white; leyko`s white +
fai`nein to show: cf. G. leukophan.] (Min.)
A mineral of a greenish yellow color; it is a silicate of
glucina, lime, and soda with fluorine. Called also
leucophanite. leucophaniteLeucophane Leu"co*phane (l[=u]"k[-o]*f[=a]n), n. [Gr.
leykofanh`s appearing bright or white; leyko`s white +
fai`nein to show: cf. G. leukophan.] (Min.)
A mineral of a greenish yellow color; it is a silicate of
glucina, lime, and soda with fluorine. Called also
leucophanite. Leucophlegmacy
Leucophlegmacy Leu`co*phleg"ma*cy
(l[=u]`k[-o]*fl[e^]g"m[.a]*s[y^]), n. [Gr. leykoflegmati`a;
leyko`s white + fle`gma phlegm: cf. F. leucophlegmasie.]
(Med.)
A dropsical habit of body, or the commencement of anasarca;
paleness, with viscid juices and cold sweats.
Leucophlegmatic
Leucophlegmatic Leu`co*phleg*mat"ic (-fl[e^]g*m[a^]t"[i^]k),
a. [Cf. F. leucophlegmatique, Gr. leykofle`gmatos.]
Having a dropsical habit of body, with a white bloated skin.
Leucophyll
Leucophyll Leu"co*phyll (l[=u]"k[-o]*f[i^]l), n. [Leuco- + Gr.
fy`llon a leaf.] (Chem.)
A colorless substance isomeric with chlorophyll, contained in
parts of plants capable of becoming green. --Watts.
Meaning of Leuco from wikipedia
-
prepared by the
condensation of
benzaldehyde and
dimethylaniline to give
leuco malachite green (LMG): C 6 H 5 CHO + C 6 H 5 N ( CH 3 ) 2 ⟶ ( C 6 H 5 N...
- A
leuco dye (from the Gr**** λευκό leuko:
white ) is a dye
which can
switch between two
chemical forms, one of
which is colorless.
Reversible transformations...
- of chromism. The two
common approaches are
based on
liquid crystals and
leuco dyes.
Liquid crystals are used in
precision applications, as
their responses...
-
recommended in 1954 the use of the
Forestal solvent for the
isolation of
leuco-anthocyanins.
Leucoanthocyanidin dioxygenase uses flavan-3,4-diols to produce...
- are used in
thermally sensitive papers:
leuco dyes, developers,
sensitizers and stabilizers.
Leuco dyes The
leuco dyes used in
direct thermal paper are...
- the
leuco dyes are
further chemically modified to
their blocked forms. Such
blocked leuco dyes are the
leuco dye
precursors that form the
leuco dye by...
-
Leucos is a
genus of
fishes in the
family Cyprinidae, from
Southern Europe. They are carp
close to the
genus Rutilus, and were only
recently taxonomically...
-
common types of thermochromes:
liquid crystals (used in mood rings) and
leuco dyes (used in
Hypercolor T-shirts). The
color change of
Hypercolor shirts...
- that
might affect the
functionality of the ink. The
leuco dye
variant is
typically composed of
leuco dyes with
additional chemicals to add
different desired...
- Λευκόσυροι, or Λευκοσύριοι / Leucosyroi, or Leucosyrioi), also
known as
Leuco-Syrians (Leucosyrians) or
White Syrians, were an
ancient people in central...
