/ Dictionary / Index S suppository: Meaning and Definition of Find definitions for: sup•pos•i•to•ry Pronunciation: (su-poz'i-tôr"ē, -tōr"ē), [key] — pl. -ries. a solid, conical mass of medicinal substance that melts upon insertion into the rectum or vagina. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: suppository (Thesaurus) suppositive suppress 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