Polycladida

plural noun
Poly·clad·i·da | \ˌpälēˈkladədə, -lə̇ˈk-\

Definition of Polycladida 

: an order of Turbellaria comprising broad flattened often brightly colored marine flatworms in which the alimentary tract has many primary branches radiating from a central cavity, the ovaries and testes are numerous, and no vitellarium is developed

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History and Etymology for Polycladida

New Latin, from Polycladus, type genus (from Greek polyklados with many branches, from poly- + klados sprout, branch, twig) + New Latin -ida

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