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Cnidaria

[nahy-dair-ee-uh]
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noun Zoology.
  1. an alternative name for the invertebrate phylum Coelenterata, giving emphasis to the stinging structures as characteristic of the phylum.
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Origin of Cnidaria

From New Latin; see origin at cnida, -aria
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for cnidaria

Historical Examples

  • Real parasites are not numerous among the sponges and cnidaria.

    The Wonders of Life

    Ernst Haeckel

  • On the other hand, the cnidaria develop into higher radial (star-shaped) persons, and the platodes into lower bilateral persons.

    The Wonders of Life

    Ernst Haeckel

  • Self-cleavage is also found among the higher multicellular organisms—namely, the cnidaria (polyps, medus).

    The Wonders of Life

    Ernst Haeckel

  • Flagellated epithelium is especially found in the cnidaria and platodes; ciliated epithelium mostly in the vermalia and mollusca.

    The Wonders of Life

    Ernst Haeckel

  • I began with the consideration of the simplest sponges (olynthus) and cnidaria (hydra).

    The Wonders of Life

    Ernst Haeckel


Word Origin and History for cnidaria

Cnidaria

n.

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

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Online Etymology Dictionary, © 2010 Douglas Harper