/ Dictionary / Index T three unities, the: Meaning and Definition of Find definitions for: three' u'nities the. Pronunciation: [key] See under(def. 8). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. three-toed woodpecker three-valued Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language