Standard Lemma guide

pneumatocyst

noun · 1 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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1

noun

Meaning 1

A sac or other structure containing air and used for flotation by a marine organism, chiefly used in reference to those of kelps and siphonophores.

Definition source: English Wiktionary via Wiktextract

Qualifier: marine biology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From pneumato- + cyst.

Across languages

Translations

2 source translations are retained for this English entry.

  • French: pneumatocyste — sac containing air used for flotation by marine organism
  • French: aérocyste — sac containing air used for flotation by marine organism