Main Entry: en·do·me·tri·um Pronunciation: -'mE-trE-&m Function: noun Inflected Form: pluralen·do·me·tria/-trE-&/ : the mucous membrane lining the uterus that is composed of three layers —see STRATUM BASALE, STRATUM COMPACTUM, STRATUM SPONGIOSUM
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.