octant (plural octants)

  1. The eighth part of a circle; an arc of 45 degrees.
  2. (astrology) The aspect of two planets that are 45°, or one-eighth of a circle, apart.
  3. (geometry) The eighth part of a disc; a sector of 45 degrees; half a quadrant.
  4. (nautical) An instrument for measuring angles, particularly of elevation.
Synonyms Translations
  • Russian: окта́нт

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