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: any of a genus (Planaria) of 2-eyed planarian worms
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1855, in the meaning defined above
New Latin, from feminine of Late Latin planarius lying on a plane, from Latin planum plane
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More Definitions for planaria
: the type genus of the family Planariidae comprising planarian worms having two eyes
: any worm of the genus Planaria
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occurring twice a year or every two years
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