Lettrure Let"trure (-trur)
noun See Letterure . [ Obsolete]
Chaucer.
Letts Letts (lĕts)
noun plural ; sing.
Lett (lĕt).
(Ethnol.) An Indo-European people, allied to the Lithuanians and Old Prussians, and inhabiting a part of the Baltic provinces of Russia.
Lettuce Let"tuce (lĕt"tĭs)
noun [ Middle English
letuce , probably through Old French from some Late Latin derivative of Latin
lactuca lettuce, which, according to Varro, is from
lac ,
lactis , milk, on account of the milky white juice which flows from it when it is cut: confer French
laitue . Confer
Lacteal ,
Lactucic .]
(Botany) A composite plant of the genus Lactuca ( Latin sativa ), the leaves of which are used as salad. Plants of this genus yield a milky juice, from which lactucarium is obtained. The commonest wild lettuce of the United States is Latin Canadensis . Hare's lettuce ,
Lamb's lettuce .
See under Hare , and Lamb . - -
Lettuce opium .
See Lactucarium . - -
Sea lettuce ,
certain papery green seaweeds of the genus Ulva .
Letuary Let"u·a·ry (lĕt"u*a*rȳ)
noun Electuary. [ Obsolete]
Chaucer.
Leuc- Leuc- (lūk-). Same as Leuco- .
Leucadendron Leu`ca·den"dron (lū`kȧ*dĕn"drŏn)
noun [ New Latin , from Greek
leyko`s white +
de`ndron tree.]
(Botany) A genus of evergreen shrubs from the Cape of Good Hope, having handsome foliage. Leucadendron argenteum is the silverboom of the colonists.
Leucaniline Leu·can"i·line (lu*kăn"ĭ*lĭn or -lēn)
noun [
Leuc- +
aniline .]
(Chemistry) A colorless, crystalline, organic base, obtained from rosaniline by reduction, and also from other sources. It forms colorless salts.
Leuchæmia Leu·chæ"mi·a (lu*kē"mĭ*ȧ)
noun [ New Latin , from Greek
leyko`s white +
a"i^ma blood.]
(Medicine) See Leucocythæmia . --
Leu*chæm"ic (lu*kĕm"ĭk)
adjective [ Written also
leukæmia ,
leukæmic .]
Leucic Leu"cic (lū"sĭk),
Leu*cin"ic (lu*sĭn"ĭk)
adjective (Chemistry) Pertaining to, or designating, an acid obtained from leucin, and called also oxycaproic acid .
Leucin Leu"cin (lū"sĭn)
noun [ Greek
leyko`s white.]
(Physiol. Chem.) A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom. Chemically it is to be considered as amido-caproic acid.
Leucite Leu"cite (lū"sīt)
noun [ Greek
leyko`s white: confer French
leucite .]
1. (Min.) A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash. It is found in the volcanic rocks of Italy, especially at Vesuvius. 2. (Botany) A leucoplast.
Leucitic Leu·cit"ic (lu*sĭt"ĭk)
adjective (Min.) Containing leucite; as, leucitic rocks.
Leucitoid Leu"ci·toid (lū"sĭ*toid)
noun [
Leucite +
-oid .]
(Crystallog.) The trapezohedron or tetragonal trisoctahedron; -- so called as being the form of the mineral leucite.
Leuco- Leu"co- (lū"ko-), Leuc- (lūk- ). [ Greek leyko`s white.] A combining form signifying white , colorless ; specif. (Chemistry) , denoting an extensive series of colorless organic compounds, obtained by reduction from certain other colored compounds; as, leuc aniline, leuc aurin, etc.
Leucocyte Leu"co·cyte (lū"ko*sīt)
noun [
Leuco- + Greek
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. » They all consist of more or less spherical masses of protoplasm, without any surrounding membrane or wall, and are capable of motion.
Leucocythæmia Leu`co·cy·thæ"mi·a Leu`co*cy*the"mi*a (lū`ko*si*thē"mĭ*ȧ) noun [ New Latin , from Greek leyko`s white + ky`tos a hollow vessel + a"i^ma blood.] (Medicine) 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; leuchæmia.
Leucocytogenesis Leu`co·cy`to·gen"e·sis (- sī`to*jĕn"e*sĭs)
noun [
Leucocyte +
genesis .]
(Physiol.) The formation of leucocytes.
Leucoethiopic Leu`co·e`thi·op"ic (- ē`thĭ*ŏp"ĭk)
adjective [
Leuco- +
Ethiopic .]
White and black; -- said of a white animal of a black species, or the albino of the negro race.
Leucoethiops Leu`co·e"thi·ops (-ē"thĭ*ŏps)
noun [
Leuco- +
Aethiops .]
An albino. [ Also written
leucœthiops .]
Leucoline Leu"co·line (lū"ko*lĭn or -lēn)
noun [
Leuc- + Latin
ol eum oil.]
(Chemistry) A nitrogenous organic base from coal tar, and identical with quinoline. Confer Quinoline .
Leucoma Leu·co"ma (lu*kō"mȧ)
noun [ New Latin , from Greek
ley`kwma , from
leyko`s white.]
(Medicine) A white opacity in the cornea of the eye; -- called also albugo .
Leucomaine Leu·co"ma·ine (lu*kō"mȧ*ĭn or - ēn)
noun [
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 Leu·con"ic (-kŏn"ĭk)
adjective [
Leuc- + croc
onic .]
(Chemistry) Pertaining to, or designating, a complex organic acid, obtained as a yellowish white gum by the oxidation of croconic acid.
Leucopathy Leu·cop"a·thy (lu*kŏp"ȧ*thȳ)
noun [
Leuco- + Greek
pa`schein ,
paqei^n to suffer.]
The state of an albino, or of a white child of black parents.
Leucophane Leu"co·phane (lū"ko*fān)
noun [ Greek
leykofanh`s appearing bright or white;
leyko`s white +
fai`nein to show: confer German
leukophan .]
(Min.) A mineral of a greenish yellow color; it is a silicate of glucina, lime, and soda with fluorine. Called also leucophanite .
Leucophlegmacy Leu`co·phleg"ma·cy (lū`ko*flĕg"mȧ*sȳ)
noun [ Greek
leykoflegmati`a ;
leyko`s white +
fle`gma phlegm: confer French
leucophlegmasie .]
(Medicine) A dropsical habit of body, or the commencement of anasarca; paleness, with viscid juices and cold sweats.
Leucophlegmatic Leu`co·phleg·mat"ic (-flĕg*măt"ĭk)
adjective [ Confer French
leucophlegmatique , Greek
leykofle`gmatos .]
Having a dropsical habit of body, with a white bloated skin.
Leucophyll Leu"co·phyll (lū"ko*fĭl)
noun [
Leuco- + Greek
fy`llon a leaf.]
(Chemistry) A colorless substance isomeric with chlorophyll, contained in parts of plants capable of becoming green. Watts.
Leucophyllous Leu·coph"yl·lous (lu*kŏf"ĭl*lŭs or lū`ko*fĭl"lŭs)
adjective [ Greek
leyko`fyllos ;
leyko`s white +
fy`llon a leaf.]
(Botany) Having white or silvery foliage.
Leucoplast Leu"co·plast (lū"ko*plăst),
Leu`co*plas"tid (-plăs"tĭd)
noun [
Leuco- + Greek
pla`ssein to mold.]
(Botany) One of certain very minute whitish or colorless granules occurring in the protoplasm of plants and supposed to be the nuclei around which starch granules will form.
Leucopyrite Leu·cop"y·rite (lu*kŏp"ĭ*rīt)
noun [
Leuco- +
pyrites .]
(Min.) A mineral of a color between white and steel-gray, with a metallic luster, and consisting chiefly of arsenic and iron.
Leucorrhœa Leu`cor·rhœ"a (lū`kŏr*rē"ȧ)
noun [
Leuco- + Greek
"rei^n to flow.]
(Medicine) A discharge of a white, yellowish, or greenish, viscid mucus, resulting from inflammation or irritation of the membrane lining the genital organs of the female; the whites. Dunglison.
Leucoryx Leu"co·ryx (lū"ko*rĭks)
noun [ New Latin , from Greek
leyko`s +
'o`ryx a kind of gazelle.]
(Zoology) A large antelope of North Africa ( Oryx leucoryx ), allied to the gemsbok.
Leucoscope Leu"co·scope (lū"ko*skōp)
noun [
Leuco- +
-scope .]
(Physics) An instrument, devised by Professor Helmholtz, for testing the color perception of the eye, or for comparing different lights, as to their constituent colors or their relative whiteness.
Leucosoid Leu"co·soid (-soid)
adjective [ New Latin
Leucosia , the typical genus (fr. Greek
leyko`s white) +
-oid .]
(Zoology) Like or pertaining to the Leucosoidea , a tribe of marine crabs including the box crab or Calappa .
Leucosphere Leu"co·sphere (-sfēr)
noun [
Leuco- +
sphere .]
(Astron.) The inner corona. [ R.]
Leucoturic Leu`co·tu"ric (lū`ko*tū"rĭk)
adjective [
Leuco- + allan
t oic +
uric .]
(Chemistry) Pertaining to, or designating, a nitrogenous organic substance of the uric acid group, called leucoturic acid or oxalantin . See Oxalantin .
Leucous Leu"cous (lū"kŭs)
adjective [ Greek
leyko`s .]
White; -- applied to albinos, from the whiteness of their skin and hair.
Leucoxene Leu·cox"ene (lu*kŏks"ēn)
noun [
Leuco- + Greek
xe`nos stranger.]
(Min.) A nearly opaque white mineral, in part identical with titanite, observed in some igneous rocks as the result of the alteration of titanic iron.
Leuke Leuke (lūk)
adjective ,
Leuke"ness noun See Luke , etc.
Leukoplast Leu"ko·plast (lū"ko*plăst)
noun (Botany) See Leucoplast .
Leukæmia Leu·kæ"mi·a (lu*kē"mĭ*ȧ)
noun Leucocythæmia.
Levana Le·va"na (le*vā"nȧ)
noun [ Latin , from
levare to raise.]
(Rom. Myth.) A goddess who protected newborn infants.
Levant Le"vant (lē"v
a nt)
adjective [ French, present participle of
lever to raise.]
(Law) Rising or having risen from rest; -- said of cattle. See Couchant and levant , under Couchant .
Levant Le·vant" (le*vănt")
noun [ Italian
levante the point where the sun rises, the east, the Levant, from
levare to raise,
levarsi to rise: confer French
levant . See
Lever .]
1. The countries washed by the eastern part of the Mediterranean and its contiguous waters. 2. A levanter (the wind so called).
Levant Le"vant (lē"v
a nt; 277)
adjective Eastern. [ Obsolete]
Forth rush the levant and the ponent winds.
Milton.
Levant Le·vant" (le*vănt")
intransitive verb [ Confer Spanish
levantar to raise, go from one place to another.]
To run away from one's debts; to decamp. [ Colloq. Eng.]
Thackeray.
Levanter Le·vant"er (le*vănt"ẽr)
noun [ From
Levant ,
v. ]
One who levants, or decamps. [ Colloq. Eng.]
Levanter Le·vant"er noun [ From
Levant ,
noun ]
A strong easterly wind peculiar to the Mediterranean. W. H. Russell.
Levantine Le·vant"ine (le*vănt"ĭn or lĕv"
a nt*īn; 277)
adjective [ French
levantin , or Italian
levantino . See
Levant ,
noun ]
Of or pertaining to the Levant. J. Spencer.
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