chronic obstructive pulmonary diseaseOur editors are putting together more complete content — check back in about 20 minuteschronic obstructive pulmonary diseasechronic obstructive pulmonary disease — noun名詞1. a long-term lung disease that makes breathing difficult1.名詞釋義a long-term lung disease that makes breathing difficult例句Smoking is the main cause of chronic obstructive pulmonary disease.