Definition of actiniarian in English:

actiniarian

noun

Zoology
  • A cnidarian of the order Actiniaria; a sea anemone.

adjective

Zoology
  • Belonging to or characteristic of the cnidarian order Actiniaria, comprising the sea anemones.

Origin

Late 19th century; earliest use found in Annals and Magazine of Natural History. From scientific Latin Actiniaria, order name + -an.

Pronunciation:

actiniarian

/akˌtɪniˈɛːrɪən/