half-plane

noun

Either half of an infinite plane (divided by a straight line)

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Meanings

nounhalf-plane (plural half-planes)

plural half-planes

  1. mathematicsEither half of an infinite plane (divided by a straight line)

Origin

From half + plane.

Full word history & related roots →

Translations

Catalan semiplà
  • semiplàeither half of an infinite plane
Czech polorovina
  • polorovinaeither half of an infinite plane
Dutch halfvlak
  • halfvlakeither half of an infinite plane
Finnish puolitaso
  • puolitasoeither half of an infinite plane
French demi-plan
  • demi-planeither half of an infinite plane
German Halbebene
  • Halbebeneeither half of an infinite plane
Hungarian félsík
  • félsíkeither half of an infinite plane
Italian semipiano
  • semipianoeither half of an infinite plane
Latvian pusplakne
  • pusplakneeither half of an infinite plane
Polish półpłaszczyzna
  • półpłaszczyznaeither half of an infinite plane
Romanian semiplan
  • semiplaneither half of an infinite plane
Russian полуплоскость
  • полуплоскость (poluploskostʹ)either half of an infinite plane
Slovak polrovina
  • polrovinaeither half of an infinite plane
Spanish semiplano
  • semiplanoeither half of an infinite plane
Swedish halvplan
  • halvplaneither half of an infinite plane
Cite this entry
APA

half-plane. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/half-plane

MLA

“half-plane.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/half-plane. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “half-plane,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/half-plane.

Source: half-plane on Wiktionary, CC BY-SA 4.0.