/ Dictionary / Index A adenoiditis: Meaning and Definition of Find definitions for: ad•e•noid•i•tis Pronunciation: (ad"n-oi-dī'tis), [key] — n. Pathol. inflammation of the adenoid tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. adenoidectomy adenology Related Content Daily Word Quiz: supine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language