adj · noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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nī-dâr′ē-ən
Received-Pronunciation:/naɪˈdɛəɹ.i.ən/
Southern-England:Recorded audio is listed in the source snapshot.
Canada, General-American:/naɪˈdɛɹ.i.ən/
Australian:/nɑɪˈdeːɹ.i.ən/
New-Zealand:/naɪˈdeə̯ɹ.i.ən/
Scotland:/naɪˈder.i.ən/
rhymes with -ɛəɹiən
1
adj
Meaning 1
Of or relating to a cnidarian.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Any of various invertebrate animals, such as jellyfish, hydras, sea anemones, corals and formerly sponges and ctenophores that belong to the phylum Cnidaria.
Definition source: English Wiktionary via Wiktextract
Topics: biology, natural-sciences, zoology
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.