[ mɪ'dju:zə , -sə ]
■ noun ( plural ~e -zi: , -si: or ~s ) Zoology the free-swimming sexual form of a jellyfish or other coelenterate, typically umbrella-shaped with stinging tentacles around the edge. Compare with polyp .
Derivatives
medusoid adjective &noun
Origin
C18: named by assoc. with Medusa , a gorgon in Gk mythology with snakes in her hair.