decidua

Noun
  1. The epithelial tissue of the endometrium (synset 105527358)
    is a type of: epithelial tissue, epithelium - membranous tissue covering internal organs and other internal surfaces of the body
    substance meronym: endometrium - (pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition

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