- (n.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction or opposition, and quadrature or distant from another body 45 degrees.
- (n.) An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O¡, but being itself the eighth part of a circle. Cf. Sextant.
- (n.) The eighth part of a circle; an arc of 45 degrees.
- (n.) One of the eight parts into which a space is divided by three coordinate planes.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). octant. Retrieved September 30, 2026, from http://smartdefine.org/octant/definitions/2038279 |
| Chicago | Webster's. 2011. "octant" http://smartdefine.org/octant/definitions/2038279 (accessed September 30, 2026). |
| Harvard | Webster's 2011, octant, Smart Define, viewed 30 September, 2026, <http://smartdefine.org/octant/definitions/2038279>. |
| MLA | Webster's. "octant" 27 May 2011. Web. 30 September 2026. <http://smartdefine.org/octant/definitions/2038279> |