8 letters · 12 points in Scrabble
noun one of two forms that coelenterates take: it is the free-swimming sexual phase in the life cycle of a coelenterate; in this phase it has a gelatinous umbrella-shaped body and tentacles
adjective relating to or resembling a medusa
originFrom medusa + -oid.
Etymology from Wiktionary, CC BY-SA 3.0