catheter
noun
cath·e·ter
ˈka-thə-tər 
ˈkath-tər
: a tubular medical device for insertion into canals, vessels, passageways, or body cavities usually to permit injection or withdrawal of fluids or to keep a passage open compare balloon catheter
Examples of catheter in a Sentence
Recent Examples on the Web
The tubing could be connected, via a catheter, directly to a rat’s bloodstream.
—
Dhruv Khullar, New Yorker, 9 Feb. 2026
Gibson ultimately opted for a suprapubic catheter, which goes through the stomach and drains urine into an external bag.
—Toria Sheffield, PEOPLE, 31 Jan. 2026
Umbilical artery and vein catheters were then placed in Zendaya for the delivery of fluids and medications, blood draws and the monitoring of her vital signs.
—Justin Muszynski, Hartford Courant, 27 Jan. 2026
Its interventional cardiology portfolio is focused primarily on the design, development and manufacture of catheter and wire-based technologies intended to diagnose and treat cardiac disease.
—Kenneth Squire, CNBC, 17 Jan. 2026
See All Example Sentences for catheter
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Dhruv Khullar, New Yorker, 9 Feb. 2026
Gibson ultimately opted for a suprapubic catheter, which goes through the stomach and drains urine into an external bag.
—Toria Sheffield, PEOPLE, 31 Jan. 2026
Umbilical artery and vein catheters were then placed in Zendaya for the delivery of fluids and medications, blood draws and the monitoring of her vital signs.
—Justin Muszynski, Hartford Courant, 27 Jan. 2026
Its interventional cardiology portfolio is focused primarily on the design, development and manufacture of catheter and wire-based technologies intended to diagnose and treat cardiac disease.
—Kenneth Squire, CNBC, 17 Jan. 2026
See All Example Sentences for catheter
Cite this Entry
“Catheter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/catheter. Accessed 14 Feb. 2026.
Copy CitationMedical Definition
catheter
noun
cath·e·ter
ˈkath-ət-ər, ˈkath-tər
: a tubular medical device for insertion into canals, vessels, passageways, or body cavities for diagnostic or therapeutic purposes (as to permit injection or withdrawal of fluids or to keep a passage open)
Love words? Need even more definitions?
Merriam-Webster unabridged
