Pŏl'y-zō'an, n.

noun

n. [Gr. πολὺς, many, and ζῷον, a living creature.] (Zoöl.) One of a compound group among the Bryozoa, the lowest order of mollusks, and in which many animals are united in one structure.

Dana.

An illustration of a clustered colony of small, circular, radiating-patterned polyzoans.
Polyzoan (Lepralia peachii).