Definitions

1. noun

a subphylum of cnidarians, including the sea anemones, corals, and jellyfish, characterized by radial symmetry and stinging cells called nematocysts.

“The researcher studied the asterozoa in the coral reef ecosystem.”

2. plural noun

all members of the subphylum asterozoa, such as sea anemones, corals, and jellyfish.

“The diverse asterozoa in the ocean are found in a range of habitats.”