Definition of actinian in English:
A sea anemone.
- 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.
Definition of actinian in:
- British & World English dictionary