co·​lo·​nos·​co·​py ˌkō-lə-ˈnä-skə-pē How to pronounce colonoscopy (audio)
plural colonoscopies
: endoscopic examination of the colon
colonoscope noun

Example Sentences

Recent Examples on the Web Testing for it involves both a capsule endoscopy and a colonoscopy, in which a camera on a flexible tube is passed through the rectum and into the intestine. Mark Barna, Discover Magazine, 31 Dec. 2018 Patients 45 and older should talk to their doctor about screenings, such as stool examinations or visual exams, like a colonoscopy. CBS News, 7 Dec. 2022 After an initial screening, a colonoscopy is likely needed every five years. Vanessa Etienne, Peoplemag, 6 Dec. 2022 If either test returns abnormal results, doctors will still recommend a colonoscopy. Aria Bendix, NBC News, 6 Dec. 2022 Again, if anything suspicious is found, a colonoscopy will still be required. Sandee Lamotte, CNN, 6 Dec. 2022 If a stool test comes back positive or abnormal, a colonoscopy is required to complete the screening process. Fortune, 6 Dec. 2022 It’s one of the safest medical procedures out there — safer than lots of dental procedures, safer than a colonoscopy. Margy Rochlin, Los Angeles Times, 21 Nov. 2022 The diagnosis is made by biopsy of the colon, usually via colonoscopy. Dr. Keith Roach, oregonlive, 8 Nov. 2022 See More

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.

Word History

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of colonoscopy was in 1926

Dictionary Entries Near colonoscopy

Cite this Entry

“Colonoscopy.” Dictionary, Merriam-Webster, Accessed 7 Feb. 2023.

Medical Definition


co·​lo·​nos·​co·​py ˌkō-lə-ˈnäs-kə-pē How to pronounce colonoscopy (audio) ˌkäl-ə- How to pronounce colonoscopy (audio)
plural colonoscopies
: endoscopic examination of the colon
transabdominal colonoscopy with a sigmoidoscope via colotomy
colonoscopic adjective
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Fashionable Words

  • dog-sunglasses-scarf
  • Which of these items is named for a deadly weapon?
Spell It

Hear a word and type it out. How many can you get right?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?