/ Dictionary / Index S subfield: Meaning and Definition of Find definitions for: sub•field Pronunciation: (sub'fēld"), [key] — n. Math. a field that is a subset of a given field. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subfebrile subfix Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language