/ Dictionary / Index S subset: Meaning and Definition of Find definitions for: sub•set Pronunciation: (sub'set"), [key] — n. a set that is a part of a larger set. a set consisting of elements of a given set that can be the same as the given set or smaller. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subset (Thesaurus) subservient subshell Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language