Skip to the word

Added 9 October 2026

cnidarian

/naɪˈdɛəɹ.i.ən/ noun

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about cnidarian at Wordnik → Where our words come from →

Any of various invertebrate animals, such as jellyfish, hydras, sea anemones, corals and formerly sponges and ctenophores that belong to the phylum Cnidaria. .mw-parser-output .defdate{font-size:smaller}

adjective

Of or relating to a cnidarian.

Origin

From translingual Cnidaria + -an, derived from New Latin Cnīdāria, derived from Ancient Greek κνῑ́δη (knī́dē, “sea nettle”).

From Wiktionary, via Kaikki.org (CC BY-SA)

Back to today's word