*leuc*

n. [ Gr. &unr_; color + E. leucite. ] (Bot.) A chromoplastid. [ 1913 Webster ]

n. [ Gr. &unr_; must + -meter: cf. F. gleucomètre. ] An instrument for measuring the specific gravity and ascertaining the quantity of sugar contained in must. [ 1913 Webster ]

pos>pref. Same as Leuco-. [ 1913 Webster ]

{ } pref. [ 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. [ 1913 Webster ]

‖n. [ NL., fr. Gr. leyko`s white + de`ndron tree. ] (Bot.) A genus of evergreen shrubs from the Cape of Good Hope, having handsome foliage. Leucadendron argenteum is the silverboom of the colonists. [ 1913 Webster ]

n. [ Leuc- + aniline. ] (Chem.) A colorless, crystalline, organic base, obtained from rosaniline by reduction, and also from other sources. It forms colorless salts. [ 1913 Webster ]

‖n. [ NL., fr. Gr. leyko`s white + a"i^ma blood.] (Med.) See Leukemia. [Written also leukemia, leukaemia,a nd leucemia.]
-- Leu*chæm"ic a. [ Written also leukemic and leukaemic. ] [ 1913 Webster ]

n. [ Gr. leyko`s white. ] (Physiol. Chem.) a naturally occurring alpha-amino acid ((CH3)2CH.CH2.CH(NH2)-COOH), one of the building units of almost all proteins of living organisms, both animal and vegetable. It is one of the essential amino acids (not synthesized by the human body, a required component for proper nutrition), and is hydrophobic in character when bound in proteins. In isolated form it is a white, crystalline, zwitterionic substance formed, e. g. by the decomposition of proteins by pancreatic digestion, by the action of boiling dilute mineral acid, or by putrefaction. Chemically it is to be considered as amido-caproic acid. It occurs as two optical isomers, the L- and D-forms. The L-form, L-leucine, is the natural form, present in most proteins. [ 1913 Webster +PJC ]

{ } a. (Chem.) Pertaining to, or designating, an acid obtained from leucin, and called also oxycaproic acid. [ 1913 Webster ]

prop. n. A genus of freshwater fishes including the dace (Leuciscus leuciscus).
Syn. -- genus Leuciscus. [ WordNet 1.5 ]

n. [ Gr. leyko`s white: cf. F. leucite. ] [ 1913 Webster ]

1. (Min.) A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash KAlSi2O6. It is found in the volcanic rocks of Italy, especially at Vesuvius. [ 1913 Webster ]

2. (Bot.) A leucoplast. [ 1913 Webster ]

a. (Min.) Containing leucite; as, leucitic rocks. [ 1913 Webster ]

n. [ Leucite + -oid. ] (Crystallog.) The trapezohedron or tetragonal trisoctahedron; -- so called as being the form of the mineral leucite. [ 1913 Webster ]

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. [ 1913 Webster ]

☞ They all consist of more or less spherical masses of protoplasm, without any surrounding membrane or wall, and are capable of motion. [ 1913 Webster ]

{ ‖‖ } n. [ NL., fr. Gr. leyko`s white + ky`tos a hollow vessel + a"i^ma blood.] (Med.) Same as leukemia. [1913 Webster]

n. [ Leucocyte + genesis. ] (Physiol.) The formation of leucocytes. [ 1913 Webster ]

a. [ Leuco- + Ethiopic. ] White and black; -- said of a white animal of a black species, or the albino of the negro race. [ 1913 Webster ]

n. [ Leuco- + Aethiops. ] An albino. [ Also written leucœthiops. ] [ 1913 Webster ]

n. [ Leuc- + L. oleum oil. ] (Chem.) A nitrogenous organic base from coal tar, and identical with quinoline. Cf. Quinoline. [ 1913 Webster ]

‖n. [ NL., fr. Gr. ley`kwma, fr. leyko`s white. ] (Med.) A white opacity in the cornea of the eye; -- called also albugo. [ 1913 Webster ]

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. [ 1913 Webster ]

a. [ Leuc- + croconic. ] (Chem.) Pertaining to, or designating, a complex organic acid, obtained as a yellowish white gum by the oxidation of croconic acid. [ 1913 Webster ]

n. [ Leuco- + Gr. pa`schein, paqei^n to suffer. ] The state of an albino, or of a white child of black parents. [ 1913 Webster ]

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. [ 1913 Webster ]

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. [ 1913 Webster ]

a. [ Cf. F. leucophlegmatique, Gr. leykofle`gmatos. ] Having a dropsical habit of body, with a white bloated skin. [ 1913 Webster ]

n. [ Leuco- + Gr. fy`llon a leaf. ] (Chem.) A colorless substance isomeric with chlorophyll, contained in parts of plants capable of becoming green. Watts. [ 1913 Webster ]

a. [ Gr. leyko`fyllos; leyko`s white + fy`llon a leaf. ] (Bot.) Having white or silvery foliage. [ 1913 Webster ]

{ } n. [ Leuco- + Gr. pla`ssein to mold. ] (Bot.) 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. [ 1913 Webster ]

n. [ Leuco- + pyrites. ] (Min.) A mineral of a color between white and steel-gray, with a metallic luster, and consisting chiefly of arsenic and iron. [ 1913 Webster ]

n. [ Leuco- + Gr. "rei^n to flow.] (Med.) 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. [1913 Webster]

‖n. [ NL., from Gr. leyko`s + 'o`ryx a kind of gazelle. ] (Zool.) A large antelope of North Africa (Oryx leucoryx), allied to the gemsbok. [ 1913 Webster ]

n. [ 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. [ 1913 Webster ]

a. [ NL. Leucosia, the typical genus (fr. Gr. leyko`s white) + -oid. ] (Zool.) Like or pertaining to the Leucosoidea, a tribe of marine crabs including the box crab or Calappa. [ 1913 Webster ]

n. [ Leuco- + sphere. ] (Astron.) The inner corona. [ R. ] [ 1913 Webster ]

a. [ Leuco- + allantoic + uric. ] (Chem.) Pertaining to, or designating, a nitrogenous organic substance of the uric acid group, called leucoturic acid or oxalantin. See Oxalantin. [ 1913 Webster ]

a. [ Gr. leyko`s. ] White; -- applied to albinos, from the whiteness of their skin and hair. [ 1913 Webster ]

n. [ Leuco- + Gr. 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. [ 1913 Webster ]

a. [ Gr. &unr_; ocher + &unr_; white. ] Yellowish white; having a faint tint of dingy yellow. Gray. [ 1913 Webster ]