[ nahy-dair-ee-uh ]

  1. an alternative name for the invertebrate phylum Coelenterata, giving emphasis to the stinging structures as characteristic of the phylum.

Origin of Cnidaria

From New Latin; see origin at cnida, -aria

Words Nearby Cnidaria Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use Cnidaria in a sentence

  • That finding suggests that the Cnidaria phylum of animals, which includes hydras and jellyfish, already had some genetic components of sleep regulation before it diverged from the ancestors of other groups of animals.

  • 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
  • In this way is formed a ring of tentacles, the most characteristic organs of the Cnidaria.

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

    The Wonders of Life | Ernst Haeckel