en·​do·​me·​tri·​um | \ ˌen-dō-ˈmē-trē-əm How to pronounce endometrium (audio) \
plural endometria\ ˌen-​dō-​ˈmē-​trē-​əm How to pronounce endometrium (audio) \

Definition of endometrium

: the mucous membrane lining the uterus

Other Words from endometrium

endometrial \ ˌen-​dō-​ˈmē-​trē-​əl How to pronounce endometrium (audio) \ adjective

Examples of endometrium in a Sentence

Recent Examples on the Web Endometriosis, which affects one in nine Australian people with uteruses, is a disabling inflammatory condition whereby tissue that is similar to that which lines the uterus – called the endometrium – grows and spreads in other parts of the body. Lucia Osborne-crowley, refinery29.com, 26 July 2022 The endometrium, which lines the uterus and is shed during menstruation, has also been linked to the immune system. Knvul Sheikh, BostonGlobe.com, 17 July 2022 Endometriosis occurs when tissue similar to the inner lining of the uterus, also known as the endometrium, is found outside its normal location, where the tissue should not be. Jennifer "jay" Palumbo, Forbes, 28 June 2022 According to the Office on Women’s Health, endometriosis is a painful condition in which tissue that is similar to the tissue that lines the uterus (endometrium) grows on areas outside of the uterus, like on the fallopian tubes or ovaries. Serena Coady, SELF, 12 Apr. 2022 This is a type of endometrial cancer that starts in the endometrium and has features of both endometrial cancer and uterine sarcoma (a type of cancer that starts in muscle cells of the uterus), according to ACS. Jenny Mccoy, Health.com, 2 Feb. 2022 At this point the general medical consensus is that endometriosis happens when the tissue that lines your uterus (endometrium) begins to grow on other organs. Korin Miller, SELF, 6 Oct. 2021 Humans, unlike almost every other mammal, shed their entire endometrium — the womb’s inner lining — once a month and grow it back, whether or not a fertilized egg takes hold. New York Times, 27 Apr. 2021 The menstrual cycle is the monthly series of changes a body goes through, in the ovaries and the lining of the uterus (endometrium), in preparation for the possibility of pregnancy. Lauren Valenti, Vogue, 20 Feb. 2021 See More

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

First Known Use of endometrium

circa 1882, in the meaning defined above

History and Etymology for endometrium

New Latin, from end- + Greek mētra uterus, from mētr-, mētēr mother — more at mother

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Time Traveler for endometrium

Time Traveler

The first known use of endometrium was circa 1882

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Last Updated

5 Aug 2022

Cite this Entry

“Endometrium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endometrium. Accessed 8 Aug. 2022.

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More Definitions for endometrium


en·​do·​me·​tri·​um | \ -ˈmē-trē-əm How to pronounce endometrium (audio) \
plural endometria\ -​trē-​ə How to pronounce endometrium (audio) \

Medical Definition of endometrium

: the mucous membrane lining the uterus that is composed of three layers — see stratum basale, stratum compactum, stratum spongiosum

More from Merriam-Webster on endometrium

Britannica.com: Encyclopedia article about endometrium


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