Adjective

(en adjective)

Of or pertaining to a plane.

A planar projection of a three-dimensional object is its projection onto a plane.

Flat, two-dimensional.

(graph theory, of a graph) Able to be embedded in the plane with no edges intersecting.

A complete graph with more than four nodes is never planar .

(transistor chip, semiconductor devices) Having a flat profile, not etched into a mesa.

Adjective

(-)

Of or pertaining to space.

*{{quote-magazine, year=2013, month=July-August, author= Fenella Saunders, magazine=(American Scientist)

, title= Tiny Lenses See the Big Picture , passage=The single-imaging optic of the mammalian eye offers some distinct visual advantages. Such lenses can take in photons from a wide range of angles, increasing light sensitivity. They also have high spatial resolution, resolving incoming images in minute detail.}}