Possessing or characterized by an enterocoel; describing animals whose body cavity develops from the intestinal wall.
From 'enterocoel' plus the suffix '-ous' (full of, characterized by). This adjective form became standardized in comparative anatomy textbooks during the Victorian era of scientific classification.
Enterocoelous development is so fundamental that it's one of the first questions biologists ask when classifying new animals—it reveals deep family relationships in the animal kingdom!
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