a slender, hollow tube, as of metal or rubber, inserted into a body passage, vessel, or cavity for passing fluids, making examinations, etc., esp. one for draining urine from the bladder
Origin of catheterLate Latin ; from Classical Greek kathet?r ; from kathienai, to let down, thrust in ; from kata-, down + hienai, to send: see jet
A hollow flexible tube for insertion into a body cavity, duct, or vessel to allow the passage of fluids or distend a passageway. Its uses include the drainage of urine from the bladder through the urethra or insertion through a blood vessel into the heart for diagnostic purposes.
Origin of catheterLate Latin, from Greek kathet&emacron;r, from kath&imacron;enai, kathe-, to send down : kat-, kata-, cata- + h&imacron;enai, to send; see y&emacron;- in Indo-European roots.
From French cathéter.