bronchiolectasis

noun
bron·​chi·​ol·​ec·​ta·​sis | \ ˌbräŋ-kē-ō-ˈlek-tə-səs How to pronounce bronchiolectasis (audio) \
plural bronchiolectases\ -​ˌsēz How to pronounce bronchiolectases (audio) \

Medical Definition of bronchiolectasis

: dilatation of the usually terminal bronchioles (as from chronic bronchial infection)