Dictionary

planarian

noun pla·nar·i·an \-ē-ən\

Definition of PLANARIAN

:  triclad; especially :  any of various dark-colored freshwater triclad flatworms (family Planariidae) with two eyespots and a triangular head

Origin of PLANARIAN

New Latin Planaria
First Known Use: circa 1858

planarian

noun pla·nar·i·an \-ē-ən\   (Medical Dictionary)

Medical Definition of PLANARIAN

:  any of the family Planariidae or order Tricladida comprising small soft-bodied ciliated mostly aquatic turbellarian worms
planarian adjective

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