About The Word Hydroidea
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Hydroidea
| Hydroidea Definition And Meaning |
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What's The Definition Of Hydroidea?Synonyms | Synonyms for Hydroidea: Related Terms | Find terms related to Hydroidea: See Also | Hydroidea In Webster's Dictionary \Hy*droi"de*a\, n. pl. [NL. See {Hydra}, and {-oid}.]
(Zo["o]l.)
An extensive order of Hydrozoa or Acaleph[ae]. [Written also
{Hydroida}.]
Note: This order includes the hydras and the free-swimming
hydromedus[ae], together with a great variety of marine
attached hydroids, many of which grow up into large,
elegantly branched forms, consisting of a vast number
of zooids (hydranths, gonophores, etc.), united by
hollow stems. All the zooids of a colony are produced
from one primary zooid, by successive buddings. The
Siphonophora have also been included in this order by
some writers. See {Gymnoblastea}, {Hydromedusa},
{Gonosome}, {Gonotheca}.
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