/ Dictionary / Index S subsumption: Meaning and Definition of Find definitions for: sub•sump•tion Pronunciation: (sub-sump'shun), [key] — n. an act of subsuming. the state of being subsumed. something that is subsumed. a proposition subsumed under another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: subsumption (Thesaurus) subsume subsurface 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