octant

O1C3T1A1N1T1

noun

The eighth part of a circle; an arc of 45 degrees.

Similar
octile
OriginLatin octāns →
UncommonScrabble 8
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Meanings

nounoctant (plural octants)

plural octants

  1. The eighth part of a circle; an arc of 45 degrees.
  2. astrologyThe aspect of two planets that are 45°, or one-eighth of a circle, apart.
  3. geometryThe eighth part of a disc; a sector of 45 degrees; half a quadrant; one of eight divisions of a sphere by three orthogonal planes.
  4. nauticalAn instrument for measuring angles, particularly of elevation.

Synonyms & antonyms

Similar
octile
Also see
octile

Origin

  1. Latinoctāns
  2. Englishoctant

From Latin octāns. Doublet of Octans.

More words from Latin

Full word history & related roots →

Translations

Arabic ثُمْن, ثُمُن
  • ثُمْن (ṯumn)nautical instrument
  • ثُمُن (ṯumun)nautical instrument
Bulgarian октант
  • октант (oktant)nautical instrument
Dutch octant
  • octantnautical instrument
Finnish oktantti
  • oktanttinautical instrument
Italian ottante
  • ottantenautical instrument
Japanese 八分儀
  • 八分儀 (hachibungi)nautical instrument
Russian окта́нт
  • окта́нт (oktánt)nautical instrument
Swedish kvadrant, oktant
  • kvadrantnautical instrument
  • oktantnautical instrument
Turkish oktant
  • oktantnautical instrument

Rhymes & wordplay

Anagrams

Catton
Cite this entry
APA

octant. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/octant

MLA

“octant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/octant. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “octant,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/octant.

Source: octant on Wiktionary, CC BY-SA 4.0.