sigmoid colon


Definition of sigmoid colon

: 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 Born in South Carolina and raised in California, DeBord spent her 20s and early 30s as a probation officer, Hollywood location scout and stay-at-home mom, unaware of the cancer in her sigmoid colon. Joe Carlson, Star Tribune, "Sarah DeBord, cancer patient and activist, dies at 43," 24 Aug. 2020 Proctosigmoiditis: With this type, inflammation involves the rectum and extends to the sigmoid colon, the lower end of the colon. Korin Miller, SELF, "8 Questions to Ask Your Doctor After an Ulcerative Colitis Diagnosis," 19 Aug. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sigmoid colon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sigmoid colon

1896, in the meaning defined above

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The first known use of sigmoid colon was in 1896

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Cite this Entry

“Sigmoid colon.” Dictionary, Merriam-Webster, Accessed 6 Mar. 2021.

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More Definitions for sigmoid colon

sigmoid colon


Medical Definition of sigmoid colon

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

called also pelvic colon, sigmoid flexure

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