noun
octant
Octant (noun) means the eighth part of a circle; an arc of 45 degrees.
noun
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.
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Etymology
From Latin octāns. Doublet of Octans.
Frequently asked questions
What is the meaning of octant?
"octant" (noun) means the eighth part of a circle; an arc of 45 degrees.
What are the different meanings of octant?
"octant" has 3 main meanings: 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.