planaria

noun pla·nar·ia \plə-ˈner-ē-ə\

plural pla·nar·ia also pla·nar·ias

Definition of PLANARIA

: any of a genus (Planaria) of 2-eyed planarian worms; broadly : planarian

See planaria defined for kids

New Latin, from feminine of Late Latin planarius lying on a plane, from Latin planum plane

First Known Use: 1855

Medical Dictionary

noun pla·nar·ia \plə-ˈnar-ē-ə, -ˈner-\

capitalized : the type genus of the family Planariidae comprising planarian worms having two eyes

: any worm of the genus Planaria; broadly : planarian

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