/ Dictionary / Index B bronchitis: Meaning and Definition of Find definitions for: bron•chi•tis Pronunciation: (brong-kī'tis), [key] — n. Pathol. acute or chronic inflammation of the membrane lining of the bronchial tubes, caused by respiratory infection or exposure to bronchial irritants, as cigarette smoke. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bronchitis (Thesaurus) bronchiole broncho Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language