How to Spell quadrant

quadrant - noun

• An instrument for measuring altitudes consisting commonly of a graduated arc of 90 degrees with an index or vernier and usually having a plumb line or spirit level for fixing the vertical or horizontal direction

• A device or mechanical part shaped like or suggestive of the quadrant of a circle

• An arc of 90 degrees that is one quarter of a circle

• The area bounded by a quadrant and two radii