| Veratrum viride | The dried rhizome and roots contain therapeutically important alkaloids (cevadine, veratridine, jervine, pseudojervine, rubijervine, and several ester alkaloids of the base germine) used in the treatment of hypertensive disorders. (05 Mar 2000) |
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| veratryl alcohol oxidase | <enzyme> From pleurotus sajor-caju (polyporaceae); converts veratryl alcohol and various aromatic alcohols to aldehydes, reducing o2 to h2o2 Registry number: EC 1.1.3.- Synonym: veratryl alcohol oxidase I, veratryl alcohol oxidase II (26 Jun 1999) |
| verbal agraphia | Agraphia in which single letters can be written, but not words. (05 Mar 2000) |
| verbal apraxia | A speech disorder in which phonaemic substitutions are constantly used for the desired syllable or word. (05 Mar 2000) |
| verbal behaviour | Includes both producing and responding to words, either written or spoken. (12 Dec 1998) |
| verbal learning | Learning to respond verbally to a verbal stimulus cue. (12 Dec 1998) |
| verbarium | A game in word making. See Logomachy. Origin: NL, fr. L. Verbum word. (01 Mar 1998) |
| verbena | <botany> A genus of herbaceous plants of which several species are extensively cultivated for the great beauty of their flowers; vervain. Verbena, or vervain, was used by the Greeks, the Romans, and the Druids, in their sacred rites. Essence of verbena, Oil of verbena, a perfume prepared from the lemon verbena; also, a similar perfume properly called grass oil. See Grass oil, under Grass. Lemon, or Sweet, verbena, a shrubby verbenaceous plant (Lippia citriodora), with narrow leaves which exhale a pleasant, lemonlike fragrance when crushed. Origin: L. See Vervain. Source: Websters Dictionary (01 Mar 1998) |
| verbenaceous | <botany> Of or pertaining to a natural order (Verbenaceae) of gamopetalous plants of which Verbena is the type. The order includes also the black and white mangroves, and many plants noted for medicinal use or for beauty of bloom. Source: Websters Dictionary (01 Mar 1998) |
| verbigeration | Constant repetition of meaningless words or phrases; seen in schizophrenia. Synonym: catalogia, cataphasia, oral stereotypy. Origin: L. Verbum, word, + gero, to carry about (05 Mar 2000) |
| verbomania | <psychiatry> An abnormal talkativeness; a psychotic flow of speech. Origin: L. Verbum, word, + G. Mania, frenzy (05 Mar 2000) |
| verd | 1. The privilege of cutting green wood within a forest for fuel. The right of pasturing animals in a forest. 2. Greenness; freshness. See: Vert, Verdant. Source: Websters Dictionary (01 Mar 1998) |
| verd antique | <chemical> A mottled-green serpentine marble. A green porphyry called oriental verd antique. Origin: F. Vert antique a kind of marble; verd, vert, green + antique ancient: cf. It. Verde antico. Source: Websters Dictionary (01 Mar 1998) |
| verdant | 1. Covered with growing plants or grass; green; fresh; flourishing; as, verdant fields; a verdant lawn. "Let the earth Put forth the verdant grass." (Milton) 2. Unripe in knowledge or judgment; unsophisticated; raw; green; as, a verdant youth. Origin: F. Verdoyant, p. Pr. Of verdoyer to be verdant, to grow green, OF. Verdoier, verdeier, fr. Verd, vert, green, fr. L. Viridis green, fr. Virere to be green: cf. OF. Verdant verdant, L. Viridans, p. Pr. Of viridare to make green. Cf. Farthingale, Verjuice, Vert. Source: Websters Dictionary (01 Mar 1998) |
| verdigris | 1. <chemistry> A green poisonous substance used as a pigment and drug, obtained by the action of acetic acid on copper, and consisting essentially of a complex mixture of several basic copper acetates. 2. The green rust formed on copper. This rust is a carbonate of copper, and should not be confounded with true verdigris. <chemistry> Blue verdigris, an acid copper acetate; so called because the acetic acid used in making it was obtained from distilled vinegar. Verdigris green, clear bluish green, the colour of verdigris. Origin: F. Vert-de-gris, apparently from verd, vert, green + de of + gris gray, but really a corruption of LL. Viride aeris (equivalent to L. Aerugo), from L. Viridis green + aes, aeris, brass. See Verdant, and 2d Ore. Source: Websters Dictionary (01 Mar 1998) |