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A discourse or colloquy by three persons.

An amide containing three amido groups.

An amine containing three amido groups.

A Linnæan class of plants having three distinct and equal stamens.

Of or pertaining to the Triandria; having three distinct and equal stamens in the same flower.

A figure bounded by three lines, and containing three angles.

Having three angles; triangular.

Having three angles; having the form of a triangle.

To make triangular, or three-cornered.

Government by three persons; a triumvirate; also, a country under three rulers. Holland.

Having three joints.

situated between the Permian and Lias, and so named by the Germans, because consisting of three series of strata, which are called in German the Bunter sandstein, Muschelkalk, and Keuper.

Having three atoms; -- said of certain elements or radicals.

Capable of neutralizing three molecules of a monacid base, or their equivalent; having three hydrogen atoms capable of replacement by basic elements on radicals; -- said of certain acids; thus, citric acid is a tribasic acid.

A poetic foot of three short syllables, as, mèlì\'dcs.

Having three bracts.

Including, or relating to, the interval of three hundred years; tercentenary. -- n.

A muscle having three heads; specif., the great extensor of the forearm, arising by three heads and inserted into the olecranon at the elbow.

A chloride having three atoms of chlorine in the molecule.

An instrument, as a lyre or harp, having three strings.