/ Dictionary / Index S seventy-fifth: Meaning and Definition of Find definitions for: sev•en•ty-fifth Pronunciation: (sev'un-tē-fifth'), [key] — adj. next after the seventy-fourth; being the ordinal number for 75. being one of 75 equal parts. —n. a seventy-fifth part, esp. of one (). the seventy-fifth member of a series. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seventy-fifth (Thesaurus) seventy-eighth seventy-first Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language