planula larva

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• Planula — Plan u*la, n.; pl. {Planul[ae]}. [L., a little plane.] 1. (Biol.) In embryonic development, a vesicle filled with fluid, formed from the morula by the divergence of its cells in such a manner as to give rise to a central space, around which the… …   The Collaborative International Dictionary of English

• planula — [plan′yo͞o lə] n. pl. planulae [plan′yo͞olē΄] [ModL < LL, little plane, dim. < L planus, flat: see PLAIN1] the ciliated larva of a cnidarian planuloid [plan′yo͞oloid΄] adj …   English World dictionary

• Larva — Para otros usos de este término, véase Larva (desambiguación). Larva de Polychaeta, un Anélido …   Wikipedia Español

• larva — /lahr veuh/, n., pl. larvae / vee/. 1. Entomol. the immature, wingless, feeding stage of an insect that undergoes complete metamorphosis. See illus. under metamorphosis. 2. any animal in an analogous immature form. 3. the young of any… …   Universalium

• Planula — A planula is the free swimming, flattened, ciliated, bilaterally symmetric larva of a jellyfish, a hydrozoan cnidarian, or a ctenophore. Depending on the species, the planula either metamorphosises into a miniature version of the adult form (such …   Wikipedia

• planula — planular, planulate /plan yeuh layt /, adj. /plan yeuh leuh/, n., pl. planulae / lee /. Zool. the ciliate, free swimming larva of a coelenterate. [1865 70; < NL, dim. of L planum something flat. See PLANE1, ULE] * * * ▪ zoology plural  planulae …   Universalium

• planula — plà·nu·la s.f. TS zool. piccola larva ciliata degli Cnidari, vagante nelle acque marine prima di fissarsi a un sostegno e trasformarsi in polipo {{line}} {{/line}} DATA: 1895. ETIMO: dal lat. scient. planula, dal lat. planus 4piano …   Dizionario italiano

• planula — noun (plural planulae) Etymology: New Latin, from Latin planus level, flat more at floor Date: 1870 the very young usually flattened oval or oblong free swimming ciliated larva of a coelenterate …   New Collegiate Dictionary

• planula — n.; pl. lae [L. planus, flat] (CNIDARIA) A free swimming ciliated larva, cylindrical to ovoid with two cell layers (ectoderm and endoderm) …   Dictionary of invertebrate zoology

• planula — noun The larva of a hydrozoan, which is free swimming and is covered in cilia …   Wiktionary

• plánula — ► sustantivo femenino ZOOLOGÍA Larva de los cnidarios hidrozoos, pequeña, plana y circular, rodeada de cilios y capaz de desplazarse …   Enciclopedia Universal