chronic bronchitis

n.
  1. Inflammation of the bronchial mucous membrane, characterized by cough, hypersecretion of mucus, and expectoration of sputum over a long period of time and associated with increased vulnerability to bronchial infection.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.