As-tē'ri-as, n.

noun

n. [Lat. astérias, Gr. ἀστερίας, starred, from ἀστήρ, star.] (Zoöl.) A radiate animal, called star-fish, in the form usually of a five-rayed star, with a mouth below at the center. See ANIMAL KINGDOM and ECHINODERM. Dana.

A five-armed starfish is shown. — Star-fish.