sigmoid colon

noun

: the contracted and crooked part of the colon immediately above the rectum

called also sigmoid flexure

Examples of sigmoid colon 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.
Transverse colon Ascending colon Descending colon Sigmoid colon The rectum, where rectal cancer originates, is located below the sigmoid colon. — Corey Whelan, Verywell Health, 15 Aug. 2024 To identify such a sign, the contractile activity of sigmoid colon was recorded percutaneously in 48 healthy infants. — Discover Magazine, 19 Nov. 2019

Word History

First Known Use

1896, in the meaning defined above

Time Traveler
The first known use of sigmoid colon was in 1896

Rhymes for sigmoid colon

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Browse Nearby Words

sigmoid cavity
sigmoid colon
sigmoidoscope
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Cite this Entry

“Sigmoid colon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sigmoid%20colon. Accessed 30 Mar. 2025.

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Medical Definition

sigmoid colon

noun
: the contracted and crooked part of the colon immediately above the rectum

called also pelvic colon, sigmoid flexure

More from Merriam-Webster on sigmoid colon

Britannica.com: Encyclopedia article about sigmoid colon

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