- planar domain
- planar Doppler velocimetry
- planar electrode
- planar element
- planar embedding
- planar force system
- planar graph
- planar graph algorithm
- planar Hall effect
- planarity
- planarization
- planarization process
- planar junction
- planar lens
- planar limit
- planar linear magnetic grid ruler
- planar map
- planar motor
- planar near-field
- planar near-ring
- planar net
- planar parallel motion
- planar pinning center
- planar point
- planar polygon