coelenterate

1. N any invertebrate of the phylum Cnidaria (formerly Coelenterata), having a saclike body with a single opening (mouth), which occurs in polyp and medusa forms. Coelenterates include the hydra, jellyfishes, sea anemones, and corals 腔腸動物門動物

2. ADJ (loosely) any invertebrate of the phyla Cnidaria or Ctenophora 腔腸動物的