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Definition of Chronic bronchitis
1. Noun. A form of bronchitis characterized by excess production of sputum leading to a chronic cough and obstruction of air flow.
Medical Definition of Chronic bronchitis
1. A condition of the bronchial tree characterised by cough, hypersecretion of mucus, and expectoration of sputum over a long period of time, associated with frequent bronchial infection; usually due to inhalation, over a prolonged period, of air contaminated by dust or by noxious gases of combustion. (05 Mar 2000)