/ Dictionary / Index S sixty-fourth: Meaning and Definition of Find definitions for: six•ty-fourth Pronunciation: (siks'tē-fôrth', -fōrth'), [key] — adj. next after the sixty-third; being the ordinal number for 64. being one of 64 equal parts. —n. a sixty-fourth part, esp. of one (). the sixty-fourth member of a series. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sixty-fourth (Thesaurus) sixty-fourmo sixty-fourth note Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language