quadrant

noun

1. a quarter of the circumference of a circle

   Synonyms

   • quarter-circle

   Less specific

   • line

2. any of the four areas into which a plane is divided by two orthogonal coordinate axes

   Less specific

   • area, country

3. the area enclosed by two perpendicular radii of a circle

   Less specific

   • area, country

4. a measuring instrument for measuring altitude of heavenly bodies

   Less specific

   • measuring instrument, measuring system, measuring device