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decay of organic matter

(Encyclopedia)decay of organic matter or putrefaction, process whereby heterotrophic organisms, including some bacteria, fungi, saprophytic plants, and lower animals, utilize the remains of once-living tissue as a ...

Ch'an Buddhism

(Encyclopedia)Ch'an Buddhism: see Zen Buddhism. ...

An Lu-shan

(Encyclopedia)An Lu-shan än lo͞o-shän [key], d.757, Chinese general of the T'ang dynasty. Of mixed Sogdian and Turkish birth, he was appointed regional commander on the northeastern frontier. In 755 he led c.200...

An-ch'ing

(Encyclopedia)An-ch'ing än-chĭng [key]: see Anqing, China. ...

Wang An-shih

(Encyclopedia)Wang An-shih wäng än-shûr [key], 1021–86, Chinese Sung dynasty statesman. As a chief councilor (1069–74, 1075–76) he directed sweeping administrative and fiscal reforms that drew strong conse...

acid anhydride

(Encyclopedia)acid anhydride ănhīˈdrīd, –drəd [key], chemical compound that reacts with water to form an acid (see acids and bases). Anhydrides of inorganic acids are usually oxides of nonmetallic elements. ...

chloride

(Encyclopedia)chloride klōrˈīd, klôrˈ– [key], chemical compound containing chlorine. Most chlorides are salts that are formed either by direct union of chlorine with a metal or by reaction of hydrochloric ac...

isoprene

(Encyclopedia)isoprene or 2-methyl-1,3-butadiene īˈsəprēn, byo͞oˌtədīˈēn [key], colorless liquid organic compound. It is a hydrocarbon, and is insoluble in water but soluble in many organic solvents; it b...

carbon disulfide

(Encyclopedia)carbon disulfide, CS2, liquid organic compound; it is colorless, foul-smelling, flammable, and poisonous. It can be prepared by direct reaction of carbon, e.g., as charcoal, with sulfur. It is a widel...

aniline

(Encyclopedia)aniline ănˈəlĭn [key], C6H5NH2, colorless, oily, basic liquid organic compound; chemically, a primary aromatic amine whose molecule is formed by replacing one hydrogen atom of a benzene molecule w...