Dictionary

flatworm

noun flat·worm \-ˌwərm\

Definition of FLATWORM

:  any of a phylum (Platyhelminthes) of soft-bodied usually much flattened acoelomate worms (as the planarians, flukes, and tapeworms) —called also platyhelminth
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First Known Use of FLATWORM

1874
Medical Dictionary

flatworm

noun flat·worm \ˈflat-ˌwərm\

Medical Definition of FLATWORM

:  any worm of the phylum Platyhelminthes :  platyhelminth; especially :  turbellarian

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