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leuco-
leuco- (ˈl(j)uːkəʊ) before a vowel leuc-, a. Gr. λευκο-, combining form of λευκός white; (b) In Med. used to represent ‘leucocyte’ (as in leucopenia, -poiesis); (c) In Chem. [after its use in Dyeing: see b], used to form the names of some colourless compounds that are chemically transformed to colou...
Oxford English Dictionary
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Leuco dye
A leuco dye (from the Greek λευκό leuko: white ) is a dye which can switch between two chemical forms, one of which is colorless. Reversible transformations can be caused by heat, light or pH, resulting in examples of thermochromism, photochromism and halochromism respectively. Irreversible transfor...
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leucol
leucol Chem. (ˈl(j)uːkɒl) Also leukol. [f. leuco- + -ol.] = next.1844 Fownes Chem. 537 Leukol has somewhat the odour of bitter almonds. c 1865 Letheby in Circ. Sci. I. 116/1 There are evolved..aniline, leukol, picoline.
Oxford English Dictionary
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Leucocybe
Etymology
The name Leucocybe is derived from ancient Greek leuco- referring to the color white, and -cybe, a reference to head or cap.
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leucovorin
leucovorin Biochem. (l(j)uːˈkɒvərɪn) [f. mod.L. Leuco(nostoc (f. Gr. λευκο- leuco- + nostoc), the generic name + citro)vor(um (f. citr-, citro- + L. vor-āre to devour + -um) the specific epithet, of the bacterium whose growth it was originally found to promote: see -in1.] = folinic acid.1951 H. P. B...
Oxford English Dictionary
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Leucism
Etymology
The terms leucistic and leucism are derived from the stem leuc- + -ism, from Latin leuco- in turn derived from Greek leukos meaning white''.
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leucæthiop
leucæthiop (l(j)uːˈsiːθɪəp) Also leucoethiop. [f. Gr. λευκ-ός white (see leuco-) + αἰθίοπ-, αἰθίοψ an Ethiopian. Some have written leucœthiop, perh. influenced by the transliteration leucœ æthiopes (for λευκοί αἰθίοπες) in the ordinary text of Pliny N.H. v. viii.] An albino of a Negro race. So ˌleuc...
Oxford English Dictionary
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Caladenia leucochila
The specific epithet (leucochila) is said to be derived from the Greek leuco- meaning "white" and chilus meaning "-lipped", referring to the white labellum
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Echis leucogaster
Its scientific name derives from its white (leuco-), unmarked belly (gaster). like all other vipers, it is venomous.
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leucochalcite
leucochalcite Min. (ˌl(j)uːkəʊˈkælsaɪt) [Named by Sandberger, 1881, f. leuco- + Gr. χαλκ-ός brass: see -ite.] Arsenate of copper, often found in silky white needles.1883 Dana Min. App. iii. 69. 1892 Ibid. 837 Leucochalcite..occurs as a delicate coating with malachite.
Oxford English Dictionary
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leucopathy
leucopathy (l(j)uːˈkɒpəθɪ) Also in L. form leucopathia. [f. leuco- + Gr. -πάθεια, πάθος suffering.] = albinism. Also transf.1841 Blackw. Mag. L. 587 The arts are infected with a ‘leucopathy’, architecture and painting rejoicing in universal glare. 1868 Nat. Encycl. I. 383 The name [Albino] is now us...
Oxford English Dictionary
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leucopyrite
leucopyrite Min. (l(j)uːkəʊˈpaɪəraɪt) [f. leuco- + pyrite.] A variety of löllingite.1837 Dana Min. 400 Leucopyrite..occurs associated with copper nickel at Schladming, in Styria; with serpentine at Richenstein, in Silesia [etc.].
Oxford English Dictionary
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صباغ الأحواض
تستعمل بعد إرجاعها إلى مركبات منحلة في الماء عديمة اللون (Leuco vat dyes)، حيث تصبغ الألياف، وتؤكسد بعدها هذه المركبات وهي داخل الألياف لتتحول إلى خضب
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leucotomy
leucotomy Surg. (l(j)uːˈkɒtəmɪ) [ad. F. leucotomie (E. Moniz Tentatives Opératoires dans le Traitement de certaines Psychoses (1936) viii. 195): see leuco- (here signifying the white matter of the brain) and -tomy.] = lobotomy (in spec. sense).1937 E. Moniz in Amer. Jrnl. Psychiatry XCIII. 1379 (hea...
Oxford English Dictionary
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