Definition of actiniform in English:

actiniform

adjective

  • Originally: (of a polyp) having the form or structure of a sea anemone. Later (more widely): having a radiated form; having rays diverging from a centre.

Origin

Early 19th century. From actinia or its etymon ancient Greek ἀκτῖν-, ἀκτίς ray + -iform.

Pronunciation:

actiniform

/akˈtɪnɪfɔːm/