Home › Words › I › involucrininvolucrininvolucrin means A protein component of human skin.EtymologyFrom Latin involūcrum (“wrapper, covering”) + -in.nounA protein component of human skin.e.g.“In binding the protein loricrin, involucrin contributes to the formation of a cell envelope that protects corneocytes in the skin.”Definitions & examples from Wiktionary (CC BY-SA 3.0).