cystolithiasis

noun
cys·​to·​li·​thi·​a·​sis | \ ˌsis-tō-lith-ˈī-ə-səs How to pronounce cystolithiasis (audio) \
plural cystolithiases\ -​ˌsēz How to pronounce cystolithiases (audio) \

Medical Definition of cystolithiasis

: the presence of calculi in the urinary bladder