/ Dictionary / Index S superfamily: Meaning and Definition of Find definitions for: su•per•fam•i•ly Pronunciation: (s'pur-fam"u-lē, -fam"lē), [key] — pl. -lies. a category of related families within an order or suborder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: superfamily (Thesaurus) superette superfecta Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language