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A composition for two performers; a duet.

See Dodecahedral, and Dodecahedron.

Consisting of twelve years. [R.] Ash.

A twelfth part; as, the duodecimals of an inch.

Divided into twelve parts.

Having twelve leaves to a sheet; as, a duodecimo from, book, leaf, size, etc.

Consisting of twelves. Arbuthnot.

Of or pertaining to the duodenum; as, duodenal digestion.

Containing twelve; twelvefold; increasing by twelves; duodecimal.

The part of the small intestines between the stomach and the jejunum. See Illust. of Digestive apparatus, under Digestive.

A picture printed from two half-tone plates made with the screen set at different angles, and usually printed in two shades of the same color or in black and one tint.

Consisting of two letters only; biliteral. Stuart.

A cathedral. See Dome, 2. Of tower or duomo, sunny sweet. Tennyson.

Any picture printed in two shades of the same color, as duotypes and duographs are usually printed.

A print made from two half-tone plates made from the same negative, but etched differently.

Steep and lofty, in a literal sense; hard to climb. Those arduous pats they trod. Pope.

In an arduous manner; with difficulty or laboriousness.

The quality of being arduous; difficulty of execution.

Constant in application or attention; devoted; attentive; unremitting. She grows more assiduous in her attendance. Addison.

Fit to be felled. [Obs.] Eyelyn.