cystoscopePronunciation: /ˈsɪstəskəʊp/Definition of cystoscope noun Medicine an instrument inserted into the urethra for examining the urinary bladder. Derivatives cystoscopicPronunciation: /-ˈskɒpɪk/ adjective cystoscopyPronunciation: /sɪˈstɒskəpi/ noun cystoscope in other Oxford dictionaries Definition of cystoscope in the US English dictionary