stony coral

Found in Anh - Anh (Wordnet)

Definition Noun : A type of coral : A marine invertebrate animal (a polyp) that secretes a hard, calcareous (calcium carbonate) skeleton. Large colonies of these animals are the primary builders of coral reefs and atolls. Usage The term "stony coral" is used to distinguish this major group of reef-building corals from other types, such as soft corals, which do not produce a rigid skeleton. It i...