quadrant

1. n. The fourth part; the quarter. Source: opted

2. n. The quarter of a circle, or of the circumference of a circle, an arc of 90¡, or one subtending a right angle at the center. Source: opted

3. n. One of the four parts into which a plane is divided by the coordinate axes. The upper right-hand part is the first quadrant; the upper left-hand part the second; the lower left-hand part the third; and the lower right-hand part the fourth quadrant. Source: opted

4. n. An instrument for measuring altitudes, variously constructed and mounted for different specific uses in astronomy, surveying, gunnery, etc., consisting commonly of a graduated arc of 90¡, with an index or vernier, and either plain or telescopic sights, and usually having a plumb line or spirit level for fixing the vertical or horizontal direction. Source: opted

5. n. a quarter of the circumference of a circle Source: wordnet

6. n. any of the four areas into which a plane is divided by two orthogonal coordinate axes Source: wordnet

7. n. the area enclosed by two perpendicular radii of a circle Source: wordnet

8. n. a measuring instrument for measuring altitude of heavenly bodies Source: wordnet

9. The quarter of a circle, or of the circumference of a circle,an arc of 90º, or one subtending a right angle at the center. Source: adambom

10. n:100 n. a quarter of the circumference of a circle n. any of the four areas into which a plane is divided by two orthogonal coordinate axes n. the area enclosed by two perpendicular radii of a circle Source: ecdict

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