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”).

• (General American) IPA^(key): /ˈpleɪnɚ/
• (Received Pronunciation) IPA^(key): /ˈpleɪnə/

• Audio (Southern England):

  (file)

• Homophones: plainer, planer
• Rhymes: -eɪnə(ɹ)

planar (comparative more planar, superlative most planar)

1. Of or pertaining to a plane.

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

2. Flat, two-dimensional.
3. (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.

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

• plane
• planate

From pla.

• IPA^(key): (Central, Balearic) [pləˈna]
• IPA^(key): (Valencia) [plaˈnaɾ]

planar (first-person singular present plano, first-person singular preterite planí, past participle planat)

1. (transitive) synonym of aplanar
2. (intransitive) to hover, circle
3. (intransitive, figurative) to loom over

• “planar” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.
• “planar”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026
• “planar”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007

• Audio (Germany (Berlin)):

  (file)

• Rhymes: -aːɐ̯

planar (strong nominative masculine singular planarer, not comparable)

1. planar

• “planar” in Duden online
• “planar” in Digitales Wörterbuch der deutschen Sprache

planar m

1. indefinite plural of plan

From plano +‎ -ar.

• Hyphenation: pla‧nar

planar (first-person singular present plano, first-person singular preterite planei, past participle planado)

1. (intransitive) to glide (to fly unpowered)

• plano

• “planar”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “planar”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Borrowed from Late Latin planarius (“relating to a plane”), from Latin planum (“plane”).

• IPA^(key): /plaˈnaɾ/ [plaˈnaɾ]
• Rhymes: -aɾ
• Syllabification: pla‧nar

planar m or f (masculine and feminine plural planares)

1. planar (relating to a plane)

planar

1. present indicative of plana

Retrieved from "https://en.wiktionary.org/w/index.php?title=planar&oldid=89194536"