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A catheter is a thin, soft tube a doctor or nurse puts into the body to take liquid out — or, less often, to put liquid in. The kind people hear about most goes into the bladder, the bag that holds wee, so urine can leave when a person cannot get to the toilet, or cannot wee on their own. Other kinds go into a vein. It is a calm hospital word, not slang and not a joke; if a student is of it, that is fair, and the kind answer is to say it is only a small tube, put in with care. The old Greek name was already a tool for emptying the bladder: something “let down” into the body.
導管；常指導尿管（醫院說「插尿管」）
組成Borrowed from French cathéter, from Late Latin cathetēr, from Ancient Greek kathetḗr, a surgical tool for emptying the bladder. From kathíēmi, “to descend, to let down,” plus a noun ending.
同家族的字
- catheterizethe verb: to put a catheter in
- catheterizationthe noun for that medical act
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
catheternoun/ˈkæθɪtə(ɹ)/
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medicinesciencesA small tube inserted into a body cavity to administer a drug, create an opening, distend a passageway, or remove fluid.
- And I humbly hope, that the Deſcription, and the Method of uſing this Catheter, will be a means of reviving an Operation ſo happily begun, and calculated for the Good of thoſe that are afflicted with the Stone in the Bladder.
- Of course there are two kinds of catheters, one intended for the male, the other for the female urethra. The common catheter is a silver tube, of such diameter as will allow it to be introduced with ease into the urethra, and of various figures and lengths, according as it is intended for the young or adult, the male or female, subject.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。