Definition of "octant"
- noun
The eighth part of a circle; an arc of 45 degrees.
: The eighth part of a disc; a sector of 45 degrees; half a quadrant.
: An instrument for measuring angles, particularly of elevation.
- Sources
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The eighth part of a circle; an arc of 45 degrees.
: The eighth part of a disc; a sector of 45 degrees; half a quadrant.
: An instrument for measuring angles, particularly of elevation.