/ Dictionary / Index I inner sanctum: Meaning and Definition of Find definitions for: in'ner sanc'tum Pronunciation: [key] sanctum (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. inner product innersole Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language