ˈkathəd.ə(r), -ətə-, rap, -thtə- noun
( -s )
Etymology: Late Latin, from Greek kathetēr, from kathienai to send down, from kata- cata + hienai to send — more at jet
: any of various tubular medical devices designed for insertion into canals, vessels, passageways, or body cavities so as to permit injection or withdrawal of fluids or substances or to maintain the openness of a passageway