"quadrants" in the noun sense
1. quadrant, quarter-circle
a quarter of the circumference of a circle
2. quadrant
any of the four areas into which a plane is divided by two orthogonal coordinate axes
3. quadrant
the area enclosed by two perpendicular radii of a circle
4. quadrant
a measuring instrument for measuring altitude of heavenly bodies
Source: WordNet® (An amazing lexical database of English)
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