Quadrant
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The word quadrant can mean:
- A region of the Cartesian coordinate plane with a specific sign for the x and y coordinates: (+, +), (-, +), (-, -) or (-, +). It is the 2-dimensional case of an Orthant
- (based on the above) One of the four divisions of the city layout of Washington, D.C. and many other cities
- Another name for sextant
Also see the Wiktionary entry on Quadrant.
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