[nahy-truh s] /ˈnaɪ trəs/
pertaining to compounds obtained from niter, usually containing less oxygen than the corresponding nitric compounds.
containing nitrogen, usually in the trivalent state.
of, derived from, or containing nitrogen, esp in a low valency state
c.1600, from Latin nitrosus, from nitrum (see nitre). Originally “of nitre, pertaining to nitre;” more precise use in chemistry (designating a compound in which the nitrogen has a lower valence than the corresponding nitric compound) is from 1780s. Nitrous oxide attested from 1800.
nitrous ni·trous (nī’trəs)
Of, derived from, or containing nitrogen, especially in a valence state lower than that in a comparable nitric compound.
Containing nitrogen, especially nitrogen with a valence of 3. Compare nitric.
noun, Chemistry. 1. an acid, HNO 2 , known only in solution. noun 1. a weak monobasic acid known only in solution and in the form of nitrite salts. Formula: HNO2 Systematic name dioxonitric(III) acid nitrous acid n. A weak inorganic acid existing only in solution or in the form of its salts. nitrous acid […]
plural noun 1. nitrobacteria that convert ammonia derivatives into nitrites by oxidation. plural noun 1. bacteria that convert ammonia to nitrites in the soil See also nitrobacteria
noun, Chemistry. 1. .
noun, Chemistry, Pharmacology. 1. a colorless, sweet-smelling, sweet-tasting, nonflammable, slightly water-soluble gas, N 2 O, that sometimes produces a feeling of exhilaration when inhaled: used chiefly as an anesthetic in dentistry and surgery, in the manufacture of chemicals, and as an aerosol. noun 1. a colourless nonflammable slightly soluble gas with a sweet smell: used […]