Meanings
comparative more planar · superlative most planar
- Of or pertaining to a plane.
A planar projection of a three-dimensional object is its projection onto a plane.
- graph theoryAble 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; transistor chip; semiconductor devicesHaving a flat profile, not etched into a mesa.
Synonyms & antonyms
adjectiveinvolving or having two dimensions
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Proto-Indo-European*pleh₂-“flat”
- Latinplānus“flat”, “level”
- Late Latinplānārius“relating to a plane”
- Englishplanar
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”).
More words from Late Latin, Latin, Proto-Indo-European
Full word history & related roots →Translations
Bulgarian равнинен, плосък
- равнинен (ravninen)of or pertaining to a plane
- плосък (plosăk)flat, two-dimensional
Czech rovinný, planární
- rovinnýof or pertaining to a plane
- planárníof or pertaining to a plane
French planaire
- planaireof or pertaining to a plane
Irish plánach, plánach
- plánachof or pertaining to a plane
- plánachflat, two-dimensional
Italian planare, planare
- planareof or pertaining to a plane
- planareflat, two-dimensional
Māori papatahi
- papatahiflat, two-dimensional
Romanian planar, planar
- planarof or pertaining to a plane
- planarflat, two-dimensional
Spanish plano
- planoof or pertaining to a plane
Turkish düzlemsel
- düzlemselof or pertaining to a plane
Rhymes & wordplay
Rhymes with planar
Sounds the same
Cite this entry
planar. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/planar
“planar.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/planar. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “planar,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/planar.
Source: planar on Wiktionary, CC BY-SA 4.0.