Duodenum, dū-o-dē′num, n. the first portion of the small intestines, so called because about twelve fingers'-breadth in length:—pl. Duodē′na.—adj. Duodē′nal. [Formed from L. duodeni, twelve each.]
Duoliteral, dū-ō-lit′er-al, adj. consisting of two letters.
Duologue, dū′ō-log, n. a piece spoken between two.
Duomo, dū-ō′mo, n. a cathedral. [It. See Dome.]
Dup, dup, v.t. (Shak.) to undo a door. [From do and up. Cf. don and doff.]
Dupe, dūp, n. one easily cheated: one who is deceived or misled.—v.t. to deceive: to trick.—n. Dupabil′ity.—adj. Dū′pable.—n. Dū′pery, the art of deceiving others. [Fr. dupe; of uncertain origin.]
Dupion, dū′pi-on, n. a cocoon spun by two silkworms together, also the silk of such.—Also Dou′pion. [Fr.]
Duplex, dū′pleks, adj. twofold: double.—adjs. Dū′ple, double: twofold; Dū′plicate, double: twofold.—n. another thing of the same kind: a copy or transcript.—v.t. to double: to fold.—n. Duplicā′tion.—adj. Dū′plicative.—ns. Dū′plicature, a doubling: anything doubled: the fold of a membrane; Duplic′ity, doubleness: insincerity of heart or speech: deceit; Dū′ply, a second reply in Scots law.—The duplication of the cube was a problem eagerly discussed by the early Greek geometers. [L. duplicāre, -ātum—duplex—duo, two, plicāre, to fold.]
Dura. See Durra.
Durable, dūr′a-bl, adj. able to last or endure: hardy: permanent.—ns. Dur′ableness, Durabil′ity, quality of being durable: power of resisting decay.—adv. Dur′ably.—ns. Dur′ance, continuance: imprisonment: duress; Dur′ant, a strong cloth in imitation of buff-leather; Durā′tion, continuance in time: time indefinitely: power of continuance. [Fr.,—L. durabilis—durāre, to last.]