/ Dictionary / Index T trimer: Meaning and Definition of Find definitions for: tri•mer Pronunciation: (trī'mur), [key] — n. Chem. a molecule composed of three identical, simpler molecules. a polymer derived from three identical monomers. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: trimer (Thesaurus) trime trimerous Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language