Meaning & use
quadrant
One of four equal sections formed by dividing a circle or plane with two perpendicular lines.
See it in a sentence
The graph's data points all fell within the upper right quadrant of the chart.
Sailors once used a quadrant to measure the angle of stars above the horizon.
A note on using this word
Quadrant is used in geometry for one-fourth of a plane, and historically named a navigational instrument for measuring angles.
Words with a similar meaning
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