a colorless, yellowish, or brownish fuming corrosive liquid, usually prepared from nitric acid by the addition of excess nitrogen dioxide: used in organic synthesis for nitration, and as an oxidizer in liquid propellants for rockets.
noun 1. . noun, Chemistry. 1. an oily, hygroscopic, corrosive liquid, H 2 S 2 O 7 , that, depending on purity, is colorless or dark brown: used chiefly as a dehydrating agent in the manufacture of explosives and as a sulfating or sulfonating agent in the manufacture of dyes. pyrosulfuric acid (pī’rō-sŭl-fyr’ĭk) A heavy, […]
- Fuming sulphuric acid
noun 1. a mixture of pyrosulphuric acid, H2S2O7, and other condensed acids, made by dissolving sulphur trioxide in concentrated sulphuric acid Also called oleum, Nordhausen acid (ˈnɔːdhaʊzən)
[fyoo-mi-tawr-ee, -tohr-ee] /ˈfyu mɪˌtɔr i, -ˌtoʊr i/ noun, plural fumitories. 1. any plant of the genus Fumaria, especially a delicate herb, F. officinalis, having finely dissected, grayish leaves and spikes of purplish flowers. /ˈfjuːmɪtərɪ; -trɪ/ noun (pl) -ries 1. any plant of the chiefly European genus Fumaria, esp F. officinalis, having spurred flowers and formerly […]
noun 1. the plant family Fumariaceae, characterized by herbaceous plants having deeply cut basal or alternate leaves, flowers with four petals of which one or two are spurred or lobed, and fruit in the form of a capsule, and including the bleeding heart, Dutchman’s-breeches, fumitory, and squirrel corn.