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guilt

(Encyclopedia)guilt, in psychology, a term denoting an unpleasant feeling associated with unfulfilled wishes. Sigmund Freud initially contended that sexual drives produce sense of guilt in the superego, the moral c...

sarin

(Encyclopedia)sarin zärēnˈ [key], volatile liquid used as a nerve gas. It boils at 147℃ but evaporates quickly at room temperature; its vapor is colorless and odorless. Chemically, sarin is fluoroisopropoxymet...

Belgian Malinois

(Encyclopedia)Belgian Malinois mălĭnwäˈ [key], a breed of medium-sized working dog developed in Belgium at the turn of the 20th cent. It stands from 22 to 26 in. (55.9–66 cm) high at the shoulder and weighs f...

pug

(Encyclopedia)pug, breed of sturdy, compact toy dog that became popular in England during the 19th cent. It stands about 11 in. (27.9 cm) high at the shoulder and weighs from 14 to 18 lb (6.4–8.2 kg). Its short, ...

Vestris, Gaetan

(Encyclopedia)Vestris, Gaetan gäātäNˈ vĕsˈtrēs [key], 1729–1808, Italian-French classical dancer, b. Florence. Vestris was one of the greatest dancers of the 18th cent. Born of an Italian theatrical family...

Nyad, Diana

(Encyclopedia)Nyad, Diana nīˈăd [key], 1949–, American distance swimmer, b. New York City as Diana Sneed, grad. Lake Forest College, 1973. She began swimming seriously as a teenager, becoming interested in dis...

nitrobenzene

(Encyclopedia)nitrobenzene, C6H5NO2, very poisonous, flammable, pale yellow, liquid aromatic compound with an odor like that of bitter almonds. It is sometimes called oil of mirbane or nitrobenzol. Nitrobenzene mel...

commedia dell'arte

(Encyclopedia)commedia dell'arte kōm-māˈdēä dĕl-lärˈtā [key], popular form of comedy employing improvised dialogue and masked characters that flourished in Italy from the 16th to the 18th cent. The impac...

Chandler, Raymond Thornton

(Encyclopedia)Chandler, Raymond Thornton, 1888–1959, American author, b. Chicago, educated in England. After World War I, he entered the oil business in California. Bankrupt during the Depression, he published hi...

sleep apnea

(Encyclopedia)sleep apnea, episodes of interrupted breathing during sleep. Obstructive sleep apnea is a common disorder in which relaxation of muscles in the throat repeatedly close off the airway during sleep; the...

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