/ Dictionary / Index T tenonitis: Meaning and Definition of Find definitions for: ten•o•ni•tis Pronunciation: (ten"u-nī'tis), [key] — n. Pathol. tendinitis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tenonitis (Thesaurus) tenon tenor Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language