bronchiolitis obliterans

== English == === Noun === bronchiolitis obliterans (uncountable) A rare and irreversible form of obstructive lung disease in which the bronchioles are compressed and narrowed by fibrosis and/or inflammation. ==== Synonyms ==== popcorn lung BO (abbreviation) ==== Hypernyms ==== bronchiolitis (the generic condition affecting bronchioles) ==== Related terms ==== bronchiole bronchiolitis (the specific condition affecting bronchioles) bronchiolitis obliterans organizing pneumonia (BOOP)