Actinia

noun

1. Agenus of zoöphytes, belonging to the Radiata of Cuvier, regarded as the type of the order Malacodermata, subclass Zoantharia, class Actinozoa, subkingdom Cælenterata, in modern classification.
2. An animal of the genus Actinia or family Actiniidæ.
3. An animal of the class Anthozoa, and family Actinidæ. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See polyp.].
4. A genus in the family Actinidæ.
5. a sea anemone, a member of the genus Actinia.