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noun

octant

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Octant (noun) means one eighth of a circle, equal to an angle of 45 degrees.

noun
1
One eighth of a circle, equal to an angle of 45 degrees.
2
(astronomy) The position of two planets when they are 45 degrees apart as seen from earth.
3
One eighth of a flat circular shape, or one of eight parts a sphere is split into by three planes at right angles to each other.
4
A tool used to measure angles, especially how high something stands above the horizon.
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Etymology

Comes from Latin octāns, and is a doublet of Octans.

Frequently asked questions

What is the meaning of octant?
"octant" (noun) means one eighth of a circle, equal to an angle of 45 degrees.
What are the different meanings of octant?
"octant" has 3 main meanings: 1. One eighth of a circle, equal to an angle of 45 degrees; 2. (astronomy) The position of two planets when they are 45 degrees apart as seen from earth; 3. One eighth of a flat circular shape, or one of eight parts a sphere is split into by three planes at right angles to each other.
Definitions from Wiktionary, CC BY-SA 4.0