/ Dictionary / Index S subfix: Meaning and Definition of Find definitions for: sub•fix Pronunciation: (sub'fiks), [key] — n. subscript (def. 4). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subfield subfloor Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language