COPD is an acronym that stands for Chronic Obstructive Pulmonary Disease. It is used as a generic term to cover chiefly chronic bronchitis and emphysema, since these are the two major lung diseases, which obstruct airways.

COPD is an acronym that stands for Chronic Obstructive Pulmonary Disease. It is used as a generic term to cover chiefly chronic bronchitis and emphysema, since these are the two major lung diseases, which obstruct airways.