endometrium
noun
en·do·me·tri·um ˌen-dō-ˈmē-trē-əm 
plural endometria ˌen-dō-ˈmē-trē-əm
: the mucous membrane lining the uterus
endometrial
ˌen-dō-ˈmē-trē-əl
adjective 
Example Sentences
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
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 Word History
Etymology
New Latin, from end- + Greek mētra uterus, from mētr-, mētēr mother — more at mother
First Known Use
circa 1882, in the meaning defined above
Medical Definition
endometrium
noun
en·do·me·tri·um -ˈmē-trē-əm
plural endometria -trē-ə
: the mucous membrane lining the uterus that is composed of three layers see stratum basale, stratum compactum, stratum spongiosum