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.
In June 2018, Linette Nelson went to Mayo Clinic to have her entire rectum removed. Anthony Bettin, CBS News, 22 Dec. 2025 This means a vein in the rectum has swollen and become painful. Sherri Gordon, Parents, 22 Dec. 2025 The Picasso images appear geometric, while those pushed out of the Zuckerberg dog’s rectum look like a clip from a low-budget Matrix knockoff. Mack Degeurin, Popular Science, 4 Dec. 2025 Ignoring the urge can lead to travel constipation as the stool material stays in your rectum and gets harder. Barbara Bolen, Verywell Health, 25 Nov. 2025 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 26 Dec. 2025.

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

More from Merriam-Webster on rectum

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!