A catheter is a thin, flexible tube that doctors put into the body to drain fluids or deliver medicines. It is used in many medical procedures, especially for the bladder or blood vessels.
From Late Latin 'catheter', from Greek 'kathetēr' meaning 'something let down', from 'kathienai' meaning 'to send down'. The name refers to the tube being 'sent down' into the body.
Try Another Word