(noun) (Greek mythology ) a woman transformed into a Gorgon by Athena; she was slain by Perseus
(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
Definitions for Arc
(noun) something that curves or is curved
(verb) to turn away from a straight line or course