Home › Words › P › periosteumperiosteumperiosteum means A membrane surrounding a bone.Among words judged in Lexicurio's Arena, periosteum ranks #36,621 of 42,752 for Qualifying.EtymologyFrom Ancient Greek περί (perí, “about, around”) + ὀστέον (ostéon, “bone”).nounA membrane surrounding a bone.Definitions & examples from Wiktionary (CC BY-SA 3.0).