rectum

noun

rec·​tum ˈrek-təm How to pronounce rectum (audio)
plural rectums or recta ˈrek-tə How to pronounce rectum (audio)
: the terminal part of the intestine from the sigmoid colon to the anus

Examples of rectum in a Sentence

Recent Examples on the Web
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.
But stool also needs hydration in order to properly travel from your colon to your rectum, hence fiber’s importance. Kristen Rogers, CNN Money, 7 Apr. 2026 For a professional internet troll, nothing hit the sweet spot like a comment that involved a human rectum. Ben Mezrich, Vanity Fair, 6 Apr. 2026 The colon makes up the first several feet of the large intestine, while the remaining portion forms the rectum. Miriam Fauzia, Dallas Morning News, 19 Mar. 2026 In June 2021, Peters was officially diagnosed with stage 3 colorectal cancer after a 5-centimeter tumor was found at the top of her rectum. Angelica Stabile, FOXNews.com, 14 Mar. 2026 See All Example Sentences for rectum

Word History

Etymology

Middle English, from Medieval Latin, from rectum intestinum, literally, straight intestine

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of rectum was in the 15th century

Browse Nearby Words

Cite this Entry

“Rectum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rectum. Accessed 21 Apr. 2026.

Kids Definition

rectum

noun
rec·​tum ˈrek-təm How to pronounce rectum (audio)
plural rectums or recta -tə How to pronounce rectum (audio)
: the end of the large intestine that links the colon to the anus
rectal
-tᵊl
adjective

Medical Definition

rectum

noun
rec·​tum ˈrek-təm How to pronounce rectum (audio)
plural rectums or recta -tə How to pronounce rectum (audio)
: the terminal part of the intestine from the sigmoid colon to the anus

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