| vinyl | <chemistry> The hypothetical radical C2H3, regarded as the characteristic residue of ethylene and that related series of unsaturated hydrocarbons with which the allyl compounds are homologous. Origin: L. Vinum wine + -yl. Source: Websters Dictionary (01 Mar 1998) |
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| vinyl carbinol | CH2==CHCH2OH; 2-propenol;a colourless liquid of pungent odour used in making resins and plasticisers; highly irritating to mucous membranes and readily absorbed, causing depression and coma. Synonym: vinyl carbinol. (05 Mar 2000) |
| vinyl chloride | <chemical> A gas that has been used as an aerosol propellant and is the starting material for polyvinyl resins. Toxicity studies have shown various adverse effects, particularly the occurrence of liver neoplasms. Pharmacological action: carcinogens. Chemical name: Ethene, chloro- (12 Dec 1998) |
| vinyl ether | O(CH==CH2)2;a volatile liquid, the vapor of which produces rapid induction of general anaesthesia; prolonged administration is associated with adverse side effects on the liver and central nervous system; an obsolete agent. Synonym: vinyl ether. (05 Mar 2000) |
| vinylbenzene | C6H5CH==CH2; phenylethylene;the monomer from which polystyrenes, plastics, and synthetic rubber are made; together with divinylbenzene (for cross-linking), it is the basis of many synthetic ion exchangers. Synonym: cinnamene, ethenylbenzene, styrol, vinylbenzene. (05 Mar 2000) |
| vinylene | The bivalent radical, -CH==CH-. Synonym: ethenylene. (05 Mar 2000) |
| vinylidene | The bivalent radical, H2C==C==. (05 Mar 2000) |
| viola | <botany> A genus of polypetalous herbaceous plants, including all kinds of violets. Origin: L, a violet. See Violet. Source: Websters Dictionary (01 Mar 1998) |
| violaceous | 1. Resembling violets in colour; bluish purple. 2. <botany> Of or pertaining to a natural order of plants, of which the violet is the type. It contains about twenty genera and two hundred and fifty species. Origin: L. Violaceus, fr. Viola a violet. Source: Websters Dictionary (01 Mar 1998) |
| violaniline | <chemistry> A dyestuff of the induline group, made from aniline, and used as a substitute for indigo in dyeing wool and silk a violet-blue or a gray-blue colour. Origin: Violet + aniline. Source: Websters Dictionary (01 Mar 1998) |
| violantin | <chemistry> A complex nitrogenous substance, produced as a yellow crystalline substance, and regarded as a complex derivative of barbituric acid. See: Violuric. Source: Websters Dictionary (01 Mar 1998) |
| violaquercitrin | <chemistry> A yellow crystalline glucoside obtained from the pansy (Viola tricolour), and decomposing into glucose and quercitrin. Source: Websters Dictionary (01 Mar 1998) |
| violaxanthin de-epoxidase | <enzyme> Requires ascorbate, mechanism presumably reduction, then dehydration to form zeaxanthin Registry number: EC 1.- (26 Jun 1999) |
| violence | 1. The quality or state of being violent; highly excited action, whether physical or moral; vehemence; impetuosity; force. "That seal You ask with such a violence, the king, Mine and your master, with his own hand gave me." (Shak) "All the elements at least had gone to wrack, disturbed and torn With the violence of this conflict." (Milton) 2. Injury done to that which is entitled to respect, reverence, or observance; profanation; infringement; unjust force; outrage; assault. "Do violence to do man." (Luke III. 14) "We can not, without offering violence to all records, divine and human, deny an universal deluge." (T. Burnet) "Looking down, he saw The whole earth filled with violence." (Milton) 3. Ravishment; rape; constupration. To do violence on, to attack; to murder. "She . . . Did violence on herself." . To do violence to, to outrage; to injure; as, he does violence to his own opinions. Synonym: Vehemence, outrage, fierceness, eagerness, violation, infraction, infringement, transgression, oppression. Origin: F, fr. L. Violentia. See Violent. Source: Websters Dictionary (01 Mar 1998) |
| violent | 1. Moving or acting with physical strength; urged or impelled with force; excited by strong feeling or passion; forcible; vehement; impetuous; fierce; furious; severe; as, a violent blow; the violent attack of a disease. "Float upon a wild and violent sea." (Shak) "A violent cross wind from either coast." (Milton) 2. Acting, characterised, or produced by unjust or improper force; outrageous; unauthorised; as, a violent attack on the right of free speech. "To bring forth more violent deeds." (Milton) "Some violent hands were laid on Humphrey's life." (Shak) 3. Produced or effected by force; not spontaneous; unnatural; abnormal. "These violent delights have violent ends." (Shak) "No violent state can be perpetual." (T. Burnet) "Ease would recant Vows made in pain, as violent and void." (Milton) Violent presumption, rents or profits of an estate obtained by a tenant wrongfully holding over after warning. They are recoverable in a process of removing. Synonym: Fierce, vehement, outrageous, boisterous, turbulent, impetuous, passionate, severe, extreme. Origin: F, from L. Violentus, from vis strength, force; probably akin to Gr. A muscle, strength. Source: Websters Dictionary (01 Mar 1998) |