cath.e.ter
n.（名词）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.导管：可弯曲的中空管子，用以插入体腔管道或血管以导入液体或扩张通道。其作用包括通过尿道从膀胱引流液体或通过血管插入心脏以达到检查的目的
来源：Late Latin 后期拉丁语 from Greek kathetôr 源自 希腊语 kathetôr from kathienai [to send down] 源自 kathienai [放下] kat-, kata- [cata-] kat-, kata- [前缀，表.向下，相反.] hiônai hô- [to send] * see yô- hiônai hô- [送] *参见 yô-
