DICT.TW Dictionary Taiwan
3.147.52.243
Search for:
▼[Show options]
[Pronunciation] [Help] [Database Info] [Server Info]

2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 Hydroida
 螅形目; 螅形目

From: Webster's Revised Unabridged Dictionary (1913)

 Hy·droi·de·a, n. pl.  Zool. An extensive order of Hydrozoa or Acalephæ. [Written also Hydroida.]
 Note: ☞ This order includes the hydras and the free-swimming hydromedusæ, 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.
 ◄ ►