/ Dictionary / Index T thyrsoid: Meaning and Definition of Find definitions for: thyr•soid Pronunciation: (thûr'soid), [key] — adj. Bot. having somewhat the form of a thyrsus. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thyrse thyrsus 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