| coelomate | <embryology> A triploblastic organism which has an internal, fluid-filled body cavity which originated from the mesoderm during embryonic development. This cavity surrounds the gut, may contain various other organs, and is called a coelom. It differs from the pseudocoels of the pseudocoelomates because it is not derived from the blastocoel. The term is used to classify multicellular animals by developmental pattern. (09 Oct 1997) |
|---|