planar.
Of or pertaining to a plane.
Meaning & usage
Of or pertaining to a plane.
A planar projection of a three-dimensional object is its projection onto a plane.
Flat, two-dimensional.
Able to be embedded in the plane with no edges intersecting.
A complete graph with more than four nodes is never planar.
Having a flat profile, not etched into a mesa.
Where this word comes from
From Late Latin plānārius (“relating to a plane”), derived from Latin plānus (“flat”, “level”), equivalent to plane + -ar, ultimately from Proto-Indo-European *pleh₂- (“flat”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.