What does catheterize mean?
To catheterize is to insert a catheter — a thin, flexible tube — into a cavity, vessel, or organ of the body, usually in order to drain fluids or deliver treatment. In everyday hospital practice the term most often refers to urinary catheterization, in which a tube is passed through the urethra into the bladder to collect urine when a patient cannot void normally, as after surgery or in cases of retention. The word also applies to vascular procedures: cardiologists catheterize arteries and veins during cardiac catheterization to diagnose and treat heart conditions. Catheterize is a transitive verb of formal, clinical register; it appears in medical charts, procedural documentation, and health journalism rather than casual conversation. It derives from the noun catheter, which English borrowed from Greek katheter, from kathienai, meaning 'to let down' — an apt description of lowering a tube into the body. Related forms include catheterization (the procedure) and the inflections catheterized and catheterizing.
verbTo insert a catheter into a body cavity, vessel, or organ, most commonly the bladder via the urethra, typically to drain fluid or administer treatment.
- To insert a catheter into the bladder via the urethra in order to drain urine.
- More generally, to insert a catheter into any vessel, cavity, or organ of the body for diagnostic or therapeutic purposes.
"The nurse carefully catheterized the patient to drain his bladder before surgery."
"After the operation, he was unable to pass urine and needed to be catheterized."
"Cardiologists catheterized the artery to deliver contrast dye for the angiogram."
The word traces back to Greek 'kathienai' — literally 'to let down' — because an ancient Greek catheter was a hollow tube 'let down' into the body.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of catheterize
Catheterize derives from the noun catheter plus the verb-forming suffix -ize. The noun comes from Greek kathetēr, meaning 'something let down', formed on the verb kathienai ('to let down'), a reference to lowering the tube into the body. The term entered medical Latin and then European languages, with English attestation of the noun dating back several centuries before the verb form became standard in modern medical usage.
Related word forms
How catheterize is actually used
A clinical, technical term used almost exclusively in medical contexts; laypeople rarely use it outside discussions of healthcare. It carries no strong emotional connotation itself, though the procedure it names can be uncomfortable for patients. Both British and American medical writing use the word identically.
Easily confused with catheterize
A catheter is the flexible tube itself (a noun), whereas catheterize is the verb describing the act of inserting one.