epithelial tissue epit·he·lial·tissue uncommon noun 1. membranous tissue covering internal organs and other internal surfaces of the body Synonymsepitheliumepithelial tissue Related words Broader terms animal tissue Narrower terms endotheliummesotheliumneuroepitheliumdecidua Part of epithelial cell WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
