Definition of medusa

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Medusa (n.) Any free swimming acaleph; a jellyfish.

Lern More About Medusa

Gymnophthalmata :: Gymnophthalmata (n. pl.) A group of acalephs, including the naked-eyed medusae; the hydromedusae. Most of them are known to be the free-swimming progeny (gonophores) of hydroids..
Taeniola :: Taeniola (n.) One of the radial partitions which separate the internal cavities of certain medusae.
Medusa :: Medusa (n.) Any free swimming acaleph; a jellyfish.
Rhizostomata :: Rhizostomata (n. pl.) A suborder of Medusae which includes very large species without marginal tentacles, but having large mouth lobes closely united at the edges. See Illust. in Appendix..
Medusae :: Medusae (pl. ) of Medus.
Medusian :: Medusian (n.) A medusa.
Scapulet :: Scapulet (n.) A secondary mouth fold developed at the base of each of the armlike lobes of the manubrium of many rhizostome medusae. See Illustration in Appendix.
Polypite :: Polypite (n.) Sometimes, the manubrium of a hydroid medusa..
Pulmograde :: Pulmograde (a.) Swimming by the expansion and contraction, or lunglike movement, of the body, or of the disk, as do the medusae..
Vesiculata :: Vesiculata (n. pl.) The campanularian medusae.
Pegasus :: Pegasus (n.) A winged horse fabled to have sprung from the body of Medusa when she was slain. He is noted for causing, with a blow of his hoof, Hippocrene, the inspiring fountain of the Muses, to spring from Mount Helicon. On this account he is, in modern times, associated with the Muses, and with ideas of poetic inspiration..
Acalephae :: Acalephae (n. pl.) A group of Coelenterata, including the Medusae or jellyfishes, and hydroids; -- so called from the stinging power they possess. Sometimes called sea nettles..
Trachymedusae :: Trachymedusae (n. pl.) A division of acalephs in which the development is direct from the eggs, without a hydroid stage. Some of the species are parasitic on other medusae..
Hydranth :: Hydranth (n.) One of the nutritive zooids of a hydroid colony. Also applied to the proboscis or manubrium of a hydroid medusa. See Illust. of Hydroidea.
Nectocalyx :: Nectocalyx (n.) The swimming bell or umbrella of a jellyfish of medusa.
Medusiform :: Medusiform (a.) Resembling a medusa in shape or structure.
Jellyfish :: "Jellyfish (n.) Any one of the acalephs, esp. one of the larger species, having a jellylike appearance. See Medusa..
Medusoid :: Medusoid (a.) Like a medusa; having the fundamental structure of a medusa, but without a locomotive disk; -- said of the sessile gonophores of hydroids..
Velarium :: Velarium (n.) The marginal membrane of certain medusae belonging to the Discophora.
Semaeostomata :: Semaeostomata (n. pl.) A division of Discophora having large free mouth lobes. It includes Aurelia, and Pelagia. Called also Semeostoma. See Illustr. under Discophora, and Medusa..
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