Definition of actinian in English:


Line breaks: ac|tin¦ian
Pronunciation: /akˈtɪnɪən


A sea anemone.
More example sentences
  • However, actinians, like all coelenterates, capture and digest animal prey with their nematocysts.
  • Even on reefs, most species of host actinians are inconspicuous, unlike their partner fish.
  • The larger, more conspicuous include other species of cold-water coral, actinians and sponges.


mid 18th century: from the modern Latin genus name Actinia (from Greek aktis, aktin- 'ray') + -an.

Definition of actinian in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day deictic
Pronunciation: ˈdeɪktɪk
denoting a word whose meaning depends on context...