- a saucer-shaped or dome-shaped, free-swimming jellyfish or hydra.
- the only mortal of the three Gorgons. She was killed by Perseus, and her head was mounted upon the aegis of Zeus and Athena.
- another name for jellyfish (def. 1), jellyfish (def. 2)
- one of the two forms in which a coelenterate exists. It has a jelly-like umbrella-shaped body, is free swimming, and produces gametes
- a mortal woman who was transformed by Athena into one of the three Gorgons. Her appearance was so hideous that those who looked directly at her were turned to stone. Perseus eventually slew her