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Cnidaria

[nahy-dair-ee-uh] /naɪˈdɛər i ə/
noun, Zoology
1.
an alternative name for the invertebrate phylum Coelenterata, giving emphasis to the stinging structures as characteristic of the phylum.
Origin
< Neo-Latin; see cnida, -aria
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for Cnidaria
  • The rest of this article deals only with jellyfish in the phylum Cnidaria.
  • Systematics systematics within the Cnidaria, as with all organisms, are always in flux.
Word Origin and History for Cnidaria
n.

phylum of stinging invertebrates, from Modern Latin cnida, from Greek knide "nettle," from stem of knizein "to scratch scrape." Related: Cnidarian.

Online Etymology Dictionary, © 2010 Douglas Harper
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