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medusa
(redirected from Medusa (mythology),)

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Medusa, in Greek mythology

Medusa (məd`sə), in Greek mythology, most famous of the three monstrous Gorgon Gorgon (gôr`gən), in Greek mythology, one of three monstrous sisters, Stheno, Euryale, and Medusa; daughters of Ceto and Phorcus.
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 sisters. She was once a beautiful woman, but she offended Athena, who changed her hair into snakes and made her face so hideous that all who looked at her were turned to stone. When Medusa was with child by Poseidon, Perseus killed her and presented her head to Athena. Chrysaor and Pegasus sprang from her blood when she died. Medusa's head retained its petrifying power even after her death. Because of this power, her image frequently appeared on Greek armor. In some myths Athena used the Medusa head on her aegis.

medusa, in zoology

medusa, in zoology, scientific name for the jellyfish jellyfish, common name for the free-swimming stage (see polyp and medusa ), of certain invertebrate animals of the phylum Cnidaria (the coelenterates). The body of a jellyfish is shaped like a bell or umbrella, with a clear, jellylike material filling most of the
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, i.e., the free-swimming stage of various animals in the phylum Cnidaria Cnidaria (nīdâr`ēə) or Coelenterata
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. See polyp and medusa polyp and medusa, names for the two body forms, one nonmotile and one typically free swimming, found in the aquatic invertebrate phylum Cnidaria (the coelenterates).
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.

medusa

Enlarge picture
Medusa stage of a jellyfish
(credit: Tom McHugh—Photo Researchers)
In zoology, one of the two principal cnidarian body forms; the typical form of the jellyfish. Its name derives from its tentacles, resembling the snakes borne by Medusa in place of hair. The medusoid body is bell- or umbrella-shaped. Hanging downward from the center is a stalklike structure, the manubrium, bearing the mouth at its tip. The mouth opens into the main body cavity, which connects with radial canals extending to the outer rim of the bell. A free-swimming form, the medusa moves by rhythmic muscular contractions of the bell, providing a slow propulsive action against the water. The other principal cnidarian body type is the polyp.


Medusa

In Greek mythology, the most famous of the monsters known as Gorgons. Anyone who looked directly at Medusa turned to stone. She was the only Gorgon who was mortal. The hero Perseus, looking only at her reflection in a shield given to him by Athena, killed her by cutting off her head. Perseus later gave the severed head to Athena, who placed it in her shield; according to another account, he buried it in the marketplace of Argos.


medusa
1. another name for jellyfish
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

medusa [mə′düs·ə]
(invertebrate zoology)

Medusa
beheaded by Perseus. [Gk. Myth.: Hall, 206; Rom. Lit.: Metamorphoses]

Medusa
the only mortal Gorgon. [Gk. Myth.: Zimmerman, 161]
See : Monsters

Medusa
her face was so hideous that any who saw it were turned to stone. [Gk. Myth.: Brewer Dictionary, 596]

Medusa
creature with fangs, snake-hair, and protruding tongue. [Gk. Myth.: Hall, 206]
See : Ugliness


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