It was a logical extension of the technology used to produce planar transistors.
From the economist.com
The planar geography of the region also favours urban growth and agglomerations.
From the en.wikipedia.org
A planar map with five colors such that no two regions with the same color meet.
From the en.wikipedia.org
The inclination of a planar structure in geology is measured by strike and dip.
From the en.wikipedia.org
Optofluidic planar reactors for photocatalytic water treatment using solar energy.
From the sciencedaily.com
The team could apply their simple particle design to fabricate other planar laces.
From the sciencedaily.com
Real-life sounds arrive as planar wavefronts, if from a reasonably distant source.
From the en.wikipedia.org
Thus the faces of a parallelepiped are planar, with opposite faces being parallel.
From the en.wikipedia.org
Non-planar network topologies are supported by such routing and switching elements.
From the nature.com
More examples
Involving two dimensions
Planar Systems, Inc. is a U.S. digital display manufacturing corporation based in Hillsboro, Oregon. Founded in 1983 as a spin-off from Tektronix, it was the first U.S. manufacturer of electroluminescent (EL) digital displays. Planar also makes a variety of other specialty displays. ...
In computer graphics, planar is the method of representing pixel colours with several bitplanes of RAM. Each bit in a bitplane is related to one pixel on the screen. ...
Of, or pertaining to, a plane; flat, two-dimensional; of a graph, able to be embedded in the plane with no edges intersecting
Any being native to a plane other than the Prime Material Plane. These are living beings, not petitioners.
A simple flat capacitor built between silicon and polysilicon layers.
A graph is planar if it can be drawn on a plane so that the edges intersect only at the vertices. (For example, of the five first complete graphs all but the fifth, K5, is planar.)
Adj - Wide in two dimensions, thin in every other dimension. Examples of planar objects are circles, squares, sheets of paper, cd's, the surface of water, etc. See the chart under tetraspace.
A Term developed by Carl Zeiss for a symmetric lens design invented by Dr. Paul Rudolph at Carl Zeiss in 1896. The name comes from "focal plane" and refers to the flat image plane that this lens design provides. One of the most copied lens designs ever created.