# colonoscopy

CEFR C1 · Noun

Source: https://englishreference.com/word/colonoscopy
Updated: 2026-05-28

## Definition

a medical test where a doctor looks inside your large intestine using a long, flexible tube with a camera. It is used to check for health problems like cancer or inflammation.

For teachers: a medical procedure involving the insertion of a flexible endoscope into the rectum to examine the interior of the colon and rectum. Often performed for diagnostic or screening purposes, particularly for colorectal cancer.

## Examples

- The doctor scheduled a colonoscopy to check for any signs of disease.
- After experiencing persistent digestive issues, the patient underwent a colonoscopy to rule out any structural abnormalities in the large intestine.
- While the procedure is generally safe, a colonoscopy requires thorough patient preparation and carries a small risk of complications such as bleeding or perforation of the intestinal wall.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.