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radicals (noun)

См. также в других словарях:

  • free radical — noun an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule (Freq. 2) in the body free… …   Useful english dictionary

  • basic nitrogen — noun : nitrogen present in the form of a base; specifically : nitrogen or the proportion of the total nitrogen present in protein or its products of hydrolysis in predominantly basic radicals (as in arginine, histidine, and lysine) as… …   Useful english dictionary

  • quaternary ammonium compound — noun a compound derived from ammonium with hydrogen atoms replaced by organic groups; used as surface active agents, disinfectants, and in drugs • Hypernyms: ↑organic compound * * * noun also quaternary ( es) : any of a large class of strong… …   Useful english dictionary

  • superoxide dismutase — noun an enzyme that catalyzes the conversion of superoxide into hydrogen peroxide and oxygen oxygen free radicals are normally removed in our bodies by the superoxide dismutase enzymes • Syn: ↑SOD • Hypernyms: ↑enzyme * * * ˌdis¦myü(ˌ)tās noun… …   Useful english dictionary

  • quaternary ammonium compound — noun An amine derivative, containing four radicals, of general formula RRRR NX; the radicals may be the same, different, or part of a ring; X is any univalent cation such as OH. See Also: primary amine, secondary amine, tertiary amine …   Wiktionary

  • secondary amine — noun An amine, containing two radicals, of general formula RR NH; the radicals may be the same, different, or part of a ring …   Wiktionary

  • tertiary amine — noun An amine, containing three radicals, of general formula RRR N; the radicals may be the same, different, or part of a ring …   Wiktionary

  • inorganic chemistry — noun the chemistry of compounds that do not contain hydrocarbon radicals • Hypernyms: ↑chemistry, ↑chemical science * * * noun : a branch of chemistry that deals with chemical elements and their compounds excluding hydrocarbons and their… …   Useful english dictionary

  • dimer — noun Etymology: International Scientific Vocabulary Date: circa 1926 a compound formed by the union of two radicals or two molecules of a simpler compound; specifically a polymer formed from two molecules of a monomer • dimeric adjective •… …   New Collegiate Dictionary

  • benzene nucleus — noun a closed chain of 6 carbon atoms with hydrogen atoms attached • Syn: ↑benzene formula, ↑benzene ring, ↑Kekule formula • Hypernyms: ↑benzene, ↑benzine, ↑benzol * * * noun see …   Useful english dictionary

  • ethyl ether — noun a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic • Syn: ↑ether, ↑ethoxyethane, ↑divinyl ether, ↑vinyl ether, ↑diethyl ether • Derivationally related forms: ↑ethereal ( …   Useful english dictionary

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