Overview of noun hydrozoa

The noun hydrozoa has 1 sense

• Hydrozoa, class Hydrozoa -- (coelenterates typically having alternation of generations; hydroid phase is usually colonial giving rise to the medusoid phase by budding: hydras and jellyfishes)

Overview of noun hydrozoan

The noun hydrozoan has 1 sense

• hydrozoan, hydroid -- (colonial coelenterates having the polyp phase dominant)