Dictionary

planar

adjective pla·nar \ˈplā-nər, -ˌnär\

Definition of PLANAR

1
:  of, relating to, or lying in a plane
2
:  two-dimensional in quality
pla·nar·i·ty \plā-ˈna-rə-tē\ noun

First Known Use of PLANAR

1850

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