/ Dictionary / Index D deciduitis: Meaning and Definition of Find definitions for: de•cid•u•i•tis Pronunciation: (di-sij"-ī'tis), [key] — n. Pathol. inflammation of the decidua. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. deciduate deciduous Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language