What does "hydrozoan" mean?

Any of many colonial coelenterates, of the class Hydrozoa, including the hydras, hydroids, hydrocorals, and siphonophores.

What is a synonym for "hydrozoan"?

Common synonyms include: hydroid, cnidarian, cnidarian term, hydra, polyp, polypoid.

noun

noun ·Rare ·Advanced level

Noun

1
Any of many colonial coelenterates, of the class Hydrozoa, including the hydras, hydroids, hydrocorals, and siphonophores.
2
colonial coelenterates having the polyp phase dominant wordnet

From translingual Hydrozoa + -an.