/ Dictionary / Index T thyrse: Meaning and Definition of Find definitions for: thyrse Pronunciation: (thûrs), [key] — n. Bot. a compact branching inflorescence, as of the lilac, in which the main axis is indeterminate and the lateral axes are determinate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: thyrse (Thesaurus) thyroxine thyrsoid Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language