pneumolithiasis

noun
pneu·​mo·​li·​thi·​a·​sis | \ -lith-ˈī-ə-səs How to pronounce pneumolithiasis (audio) \
plural pneumolithiases\ -​ˌsēz How to pronounce pneumolithiases (audio) \

Medical Definition of pneumolithiasis

: the presence or formation of calculi in the lungs