| hydrozoa | <zoology> The Acalephae; one of the classes of coelenterates, including the Hydroidea, Discophora, and Siphonophora. Origin: NL, fr. E. Hydra + Gr. An animal. Source: Websters Dictionary (01 Mar 1998) |
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| hydrozoal | <zoology> Of or pertaining to the Hydrozoa. Source: Websters Dictionary (01 Mar 1998) |
Synonyms : Hydrozoans, Physalia
| Hydrozoa |
a class of cnidarians that usually possess colonial branching polyps and small medusae (see jellyfish); it includes the poisonous genus Physalia (Portuguese man-of-war).
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| hydrozoan |
an individual of the class Hydrozoa.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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| hydrozoa | coelenterates typically having alternation of generations |
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| hydrozoa | colonial coelenterates having the polyp phase dominant |
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