/ Dictionary / Index S subfamily: Meaning and Definition of Find definitions for: sub•fam•i•ly Pronunciation: (sub-fam'u-lē, -fam'lē, sub'fam"u-lē, -fam"lē), [key] — pl. -lies. a category of related genera within a family. (in the classification of related languages within a family) a category of a higher order than a branch. Cf.(def. 8),(def. 14). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subfamily (Thesaurus) suberose subfebrile Related Content Daily Word Quiz: menagerie Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language