Definition of catheter noun from the Oxford Advanced Learner's Dictionary

 

catheter

 noun
noun
BrE BrE//ˈkæθɪtə(r)//
 
; NAmE NAmE//ˈkæθɪtər//
 
Medical equipment
 
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a thin tube that is put into the body in order to remove liquid such as urine See related entries: Medical equipment Word Origin early 17th cent.: from late Latin, from Greek kathetēr, from kathienai ‘send or let down’.
See the Oxford Advanced American Dictionary entry: catheter