co·​lo·​nos·​co·​py | \ ˌkō-lə-ˈnä-skə-pē How to pronounce colonoscopy (audio) \
plural colonoscopies

Definition of colonoscopy

: endoscopic examination of the colon

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Other Words from colonoscopy

colonoscope \ kō-​ˈlä-​nə-​ˌskōp How to pronounce colonoscopy (audio) \ noun

Examples of colonoscopy in a Sentence

Recent Examples on the Web The man underwent different types of testing including a colonoscopy. Bruce Y. Lee, Forbes, 1 Oct. 2021 What if a patient who skipped his colonoscopy also lost his health insurance and started eating more junk food? Benjamin Mazer, The Atlantic, 5 Sep. 2021 For people with a high risk of complications if an anticoagulant is stopped, most experts recommend performing a screening colonoscopy without stopping the anticoagulation. Dr. Keith Roach, oregonlive, 4 Sep. 2021 Five to 6% of patients will have a positive test and need a follow-up colonoscopy. Star Tribune, 14 Jan. 2021 Patients aged 50 to 75 are randomly assigned to receive either a colonoscopy or a fecal immunochemical test, which can be conducted at home and detects tiny amounts of blood in a patient’s poop. Benjamin Mazer, The Atlantic, 5 Sep. 2021 At multiple hospitals, major health plans pay more than four times the Medicare rate for a routine colonoscopy. New York Times, 22 Aug. 2021 Men fret over the idea of having a colonoscopy — a procedure in which a long, flexible tube with a tiny video camera called a colonoscope is inserted into the rectum. NBC News, 28 Aug. 2021 Told by their doctors to get a colonoscopy, too few patients will even ask about the cost. Lee Schafer, Star Tribune, 26 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'colonoscopy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of colonoscopy

1926, in the meaning defined above

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Time Traveler for colonoscopy

Time Traveler

The first known use of colonoscopy was in 1926

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Last Updated

7 Oct 2021

Cite this Entry

“Colonoscopy.” Dictionary, Merriam-Webster, Accessed 16 Oct. 2021.

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More Definitions for colonoscopy



English Language Learners Definition of colonoscopy

: a medical procedure in which a special tube-shaped instrument is used to take pictures of the inside of someone's colon


co·​lo·​nos·​co·​py | \ ˌkō-lə-ˈnäs-kə-pē How to pronounce colonoscopy (audio) , ˌkäl-ə- How to pronounce colonoscopy (audio) \
plural colonoscopies

Medical Definition of colonoscopy

: endoscopic examination of the colon transabdominal colonoscopy with a sigmoidoscope via colotomy

Other Words from colonoscopy

colonoscopic \ kō-​ˌlän-​ə-​ˈskäp-​ik How to pronounce colonoscopy (audio) \ adjective


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