/ Dictionary / Index T twenty-seventh: Meaning and Definition of Find definitions for: twen•ty-sev•enth Pronunciation: (twen'tē-sev'unth, twun'-), [key] — adj. next after the twenty-sixth; being the ordinal number for 27. being one of 27 equal parts. —n. a twenty-seventh part, esp. of one (). the twenty-seventh member of a series. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: twenty-seventh (Thesaurus) twenty-seven twenty-six Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language