1,027,571,457 visitors served.
1,027,571,457 visitors served. |
|
 Dictionary/ thesaurus |  Medical dictionary |  Legal dictionary |  Financial dictionary |  Acronyms |  Idioms |  Encyclopedia |  Wikipedia encyclopedia | ? |
Cnidaria |
Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia | 0.04 sec. |
|
Cnidaria /Cni·da·ria/ (ni-dar´e-ah) a phylum of marine invertebrates including sea anemones, hydras, corals, jellyfish, and comb jellies, characterized by a radially symmetric body bearing tentacles around the mouth. Cnidaria a phylum of lowly animals including hydroids and hydromedusae (class Hydrozoa), true jellyfish and free-swimming medusae (class Scyphozoa) and sea anemones, sea pens and corals (class Anthozoa). Previously called Coelenterata and that name is still widely used. |
|
? Mentioned in | ? References in periodicals archive | |
|---|---|---|
More than 500 million years ago, cnidarians, which include corals, jellyfish, and sea anemones, began to flourish in the oceans. Like all cnidarians (ny-DARE-ee-uhnz), a group of organisms that includes jellyfish and sea anemones, corals have stinging tentacles arranged in a circle around their mouths. The series will devote hour-long programs to eight of the major body plans--sponges, cnidarians (jellyfish and kin), flatworms, mollusks, annelids (earthworms) arthropods (insects, spiders, lobsters), echinoderms (starfish, sea urchins) and chordates (fish, birds, humans). |
 |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|
|---|
Disclaimer |
Privacy policy |
Feedback | Copyright © 2008 Farlex, Inc.
Printer friendly
Cite / link
Email
Feedback
Add definition
Cnidarians
