Word.ws English Dictionary

octant

octant noun: the eighth part of a circle; an arc of 45 degrees.

octant: the eighth part of a circle; an arc of 45 degrees
Image: CC BY-SA 3.0, via Wikimedia Commons

Noun

octant (plural octants)

  1. The eighth part of a circle; an arc of 45 degrees.
  2. The aspect of two planets that are 45°, or one-eighth of a circle, apart.
  3. The 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. An instrument for measuring angles, particularly of elevation.

octant meaning in Tamil and Arabic

octant in Tamil

அரைக்காற்கோளம், அரைக்கால்வட்டம், அரைக்கான்மண்டலம், அரைக்கால் பகுதி, எட்டு எண்ணுள்ள, எட்டுசெல் நிலை

octant in Arabic

nautical instrument
ثُمْن ṯumn, ثُمُن ṯumun

Synonyms of octant

Forms of octant

pluraloctants

Origin of octant

From Latin octāns. Doublet of Octans.

Words formed from octant

Questions about octant

What does octant mean?
Octant means the eighth part of a circle; an arc of 45 degrees.
What is octant in Tamil?
Octant in Tamil is அரைக்காற்கோளம், அரைக்கால்வட்டம், அரைக்கான்மண்டலம். See Octant meaning in Tamil.
What part of speech is octant?
Octant is a noun.
What is the plural of octant?
The plural of octant is octants.

Words near octant in the dictionary

  1. octanoylcarnitine
  2. octanoyls
  3. octanoyltransferase
  4. octanoyltransferases
  5. octans
  6. octant
  7. octantal
  8. octantimonide
  9. octants
  10. octanucleate
  11. octanucleotide

Source and license

Adapted from Wiktionary: octant (page history and authors); octant (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-octant.wav.

Cite this entry: “octant.” Word.ws, https://word.ws/octant. Based on Wiktionary, CC BY-SA 4.0.