# endometrium

> English word · Noun · IPA /ˌɛndəˈmiːtɹi.əm/ · frequency rank #80,424

## Definitions
1. The mucous membrane that lines the uterus in mammals and in which fertilized eggs are implanted.

## Etymology
From endo- (“inner”) + Late Latin metrium (“womb”), from Ancient Greek μήτριον (mḗtrion, “of a mother”). Compare μήτρᾱ (mḗtrā, “womb”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/endometrium