noun, plural endometria [en-doh-mee-tree-uh] . Anatomy.
the mucous membrane lining the uterus.

1880–85; endo- + Neo-Latin -metrium < Greek mḗtr(ā) womb + -ion diminutive suffix

endometrial, adjective
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World English Dictionary
endometrium (ˌɛndəʊˈmiːtrɪəm)
n , pl -tria
the mucous membrane that lines the uterus
[C19: New Latin, from endo- + Greek mētra uterus]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1882, from endo- + Gk. metra uterus, related to meter (see mother).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

endometrium en·do·me·tri·um (ěn'dō-mē'trē-əm)
n. pl. en·do·me·tri·a (-trē-ə)
The glandular mucous membrane comprising the inner layer of the uterine wall.

en'do·me'tri·al adj.
The American Heritage® Stedman's Medical Dictionary
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American Heritage
Science Dictionary
endometrium   (ěn'dō-mē'trē-əm)  Pronunciation Key 
Plural endometria
The mucous membrane that lines the uterus. A fertilized egg must embed itself in the endometrium in order to develop into an embryo. See more at menstrual cycle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The inner lining of the uterus is called the endometrium.
The endometrium is not directly sampled with the device used to sample the ectocervix.
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