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cnidarian

American

[nahy-dair-ee-uhn] / naɪˈdɛər i ən /

noun

any invertebrate animal, as a hydra, jellyfish, sea anemone, or coral, considered as belonging to the phylum Cnidaria, characterized by the specialized stinging structures in the tentacles surrounding the mouth; a coelenterate.

adjective

belonging or pertaining to the Cnidaria.

cnidarian British

/ knaɪ-, naɪˈdɛərɪən /

noun

any invertebrate of the phylum Cnidaria , which comprises the coelenterates

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

of, relating to, or belonging to the Cnidaria

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

cnidarian Scientific

/ nī-dâr′ē-ən /

Any of various invertebrate animals of the phylum Cnidaria, having a body with radial symmetry and tentacles that bear microscopic stinging capsules called nematocysts. The tentacles surround a mouth that opens into a saclike internal cavity and that is used both for ingesting food and for eliminating wastes. Cnidarians evolved in the Precambrian Era, but it is not known from what type of organism. Cnidarians include the jellyfishes, hydras, sea anemones, and corals.

Etymology

Origin of cnidarian

Cnidari(a) + -an

Vocabulary lists containing cnidarian

Animals (Zoology) - Middle School

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Animals (Zoology) - High School

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Marine Biology - Middle School

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As Prof. Holstein underscores, the data obtained paint a new picture of the predatory lifestyle as a primary characteristic of the cnidarian gastrula.

From Science Daily • Sep. 29, 2023

Still, he wishes the authors had more closely compared the new fossil with groups like the coral-containing cnidarian subgroup anthozoans.

From Science Magazine • Jul. 25, 2022

This unsettling creature is a hydra, a freshwater-dwelling cnidarian no more than a half-inch long that eats mostly insect larvae and crustaceans.

From New York Times • Dec. 11, 2021

Why, one might ask, would any organism be willing to tolerate such stranger-grafts when it could just bud indefinitely like a proper cnidarian?

From Scientific American • Sep. 15, 2018

Charniodiscus, a frond with a disklike base, he classifies as a colonial cnidarian, the phylum that includes jellyfish, sea anemones and sea pens.

From Time Magazine Archive

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023