Standard Lemma guide

half-plane

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From half + plane.

Across languages

Translations

16 source translations are retained for this English entry.

  • Azerbaijani: yarımmüstəvi — either half of an infinite plane
  • Catalan: semiplà — either half of an infinite plane
  • Czech: polorovina — either half of an infinite plane
  • Dutch: halfvlak — either half of an infinite plane
  • Finnish: puolitaso — either half of an infinite plane
  • French: demi-plan — either half of an infinite plane
  • German: Halbebene — either half of an infinite plane
  • Hungarian: félsík — either half of an infinite plane
  • Italian: semipiano — either half of an infinite plane
  • Latvian: pusplakne — either half of an infinite plane
  • Polish: półpłaszczyzna — either half of an infinite plane
  • Romanian: semiplan — either half of an infinite plane
  • Russian: полуплоскость (poluploskostʹ) — either half of an infinite plane
  • Slovak: polrovina — either half of an infinite plane
  • Spanish: semiplano — either half of an infinite plane
  • Swedish: halvplan — either half of an infinite plane
Real reading context

half-plane in complete knowledge articles