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To make trim; to put in due order for any purpose; to make right, neat, or pleasing; to adjust. The hermit trimmed his little fire. Goldsmith.

Marked with three spots, or maculæ.

Of, pertaining to, or designating, a certain tribasic acid (called also trimellitic acid) metameric with trimesitic acid.

Having, or consisting of, three members.

A division of Coleoptera including those which have but three joints in the tarsi.

One of the Trimera. Also used adjectively.

Having the parts in threes.

obtained, by the oxidation of mesitylene, as a white crystalline substance. [Written also trimesic.]

A term or period of three months.

Trimestrial. Southey.

Of or pertaining to a trimester, or period of three months; occurring once in every three months; quarterly.

Consisting of three poetical measures. -- n.

(Chem.) A prefix or combining form (also used adjectively) indicating the presence of three methyl groups.

A colorless volatile alkaline liquid, N.(CH3)3, obtained from herring brine, beet roots, etc., with a characteristic herringlike odor. It is regarded as a substituted ammonia containing three methyl groups.

A gaseous hydrocarbon, C3H6, isomeric with propylene and obtained from it indirectly. It is the base of a series of compounds analogous to the aromatic hydrocarbons.

Same as Orthorhombic.

Same as Trimeter.

In a trim manner; nicely.

One who trims, arranges, fits, or ornaments.

a. from Trim, v. The Whigs are, essentially, an inefficient, trimming, halfway sort of a party. Jeffrey. Trimming joist (Arch.), a joist into which timber trimmers are framed; a header. See Header. Knight.