Hydroida

Hydroida
Hydroidea 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}.] [1913 Webster]

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}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Hydroida — is an obsolete cnidarian order which united such animals as hydras, hydromedusae, and many marine attached hydroids. However, the group is paraphyletic and not composed from close relatives. But for the largest part, this group makes up what… …   Wikipedia

  • Hydroida —   Hydroida Anthomedusae de …   Wikipedia Español

  • Hydroida — L hydroida est un ordre obsolète de méduse se nourrissant de plancton. Portail de la biologie marine …   Wikipédia en Français

  • Hydroida — …   Википедия

  • hydroida — hy·droi·da …   English syllables

  • hydroida — I. hīˈdrȯidə noun plural Usage: capitalized Etymology: New Latin, from Hydra, included genus + oida : an order of Hydrozoa comprising forms alternating a well developed asexual polyp generation with a generation of free medusae or of abortive… …   Useful english dictionary

  • Leptolinae — NOTOC Taxobox name = Leptolinae image width = 200px image caption = Siphonophorae from Ernst Haeckel s 1904 Kunstformen der Natur regnum = Animalia subregnum = Eumetazoa phylum = Cnidaria subphylum = Medusozoa classis = Hydrozoa subclassis =… …   Wikipedia

  • Hydrozoa — Taxobox name = Hydrozoa image width = 240px image caption = Closeup of a hydrozoan colony regnum = Animalia subregnum = Eumetazoa phylum = Cnidaria subphylum = Medusozoa classis = Hydrozoa classis authority = Owen, 1843 subdivision ranks =… …   Wikipedia

  • Hydraire — Hydrozoa Hydrozoa …   Wikipédia en Français

  • Hydrozoa — Aglaopheni …   Wikipédia en Français

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”