- endocoel
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n. [Gr. endon, within; koilos, hollow](CNIDARIA: Anthozoa)1. Situated on the inner-wall (visceral side) of the coelom.2. Part of a gastrovascular cavity between paired mesentaries; endocoelar a; see exocoele.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.