Standard Lemma guide

cnidarian

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • 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.

Meaning relationships

Synonyms: coelenterate

Antonyms: none provided

Broader terms: invertebrate

Narrower terms: polyp, medusa, medusoid, medusan, jellyfish, scyphozoan, hydrozoan, hydroid, anthozoan, actinozoan

History

Etymology

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

Across languages

Translations

25 source translations are retained for this English entry.

  • Asturian: cnidario — any of various invertebrate animals that belong to the phylum Cnidaria
  • Bulgarian: книдарий (knidarij) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Bulgarian: мешесто (mešesto) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Catalan: cnidari — any of various invertebrate animals that belong to the phylum Cnidaria
  • Chinese Mandarin: 刺胞動物 /刺胞动物 (cìbāo dòngwù) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Chinese Mandarin: 刺絲胞動物 /刺丝胞动物 (cìsībāo dòngwù) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Czech: žahavec — any of various invertebrate animals that belong to the phylum Cnidaria
  • Finnish: polttiaiseläin — any of various invertebrate animals that belong to the phylum Cnidaria
  • French: cnidaire — any of various invertebrate animals that belong to the phylum Cnidaria
  • Galician: cnidario — any of various invertebrate animals that belong to the phylum Cnidaria
  • German: Nesseltier — any of various invertebrate animals that belong to the phylum Cnidaria
  • Gujarati: શૂલપ્રાણી (śūlaprāṇī) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Hindi: शूलप्राणी (śūlaprāṇī) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Hungarian: csalánozó — any of various invertebrate animals that belong to the phylum Cnidaria
  • Italian: cnidario — any of various invertebrate animals that belong to the phylum Cnidaria
  • Korean: 자포동물 (japodongmul) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Marathi: शूलप्राणी (śūlaprāṇī) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Nepali: शूलप्राणी (śūlaprāṇī) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Norwegian: nesledyr — any of various invertebrate animals that belong to the phylum Cnidaria
  • Polish: parzydełkowiec — any of various invertebrate animals that belong to the phylum Cnidaria
  • Portuguese: cnidário — any of various invertebrate animals that belong to the phylum Cnidaria
  • Russian: книда́рий (knidárij) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Russian: стрека́ющее (strekájuščeje) — any of various invertebrate animals that belong to the phylum Cnidaria
  • Spanish: cnidario — any of various invertebrate animals that belong to the phylum Cnidaria
  • Swedish: nässeldjur — any of various invertebrate animals that belong to the phylum Cnidaria