What is the meaning of Planar?

Of or pertaining to a plane.

Flat, two-dimensional.

Able to be embedded in the plane with no edges intersecting.

Having a flat profile, not etched into a mesa.

Synonym of aplanar

to hover, circle

to loom over

planar

indefinite plural of plan

to glide (to fly unpowered)

planar (relating to a plane)

present indicative of plana

Source: wiktionary.org