Me-dū'să, n.

noun

n. [Lat., Gr. Μέδουσα, originally feminine of μέδων, a ruler, from μέδειν, to rule.] 1. (Myth.) A personage who was fabled to possess the power of turning all who looked upon her into stone. 2. (pl. MEDUSÆ.) (Zoöl.) An animal of one of the divisions of radiates; — called also sea-nettle, and jelly-fish. See RADIATE.

An illustration of a jellyfish with a rounded bell and long trailing tentacles. — Medusa. (2.)