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quadrant

noun

  1. region of the plane defined by the axes of a two-dimensional Cartesian system
  2. 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
  3. a device or mechanical part shaped like or suggestive of the quadrant of a circle
  4. Circular sector with central angle 90°; one fourth of a full circle
L326189 on Wikidata ↗

Wiktionary

Pronunciation: /ˈkwɒd.ɹənt/ / /ˈkwɑ.dɹənt/ / /ˈkwɔd.ɹənt/

noun

Etymology: From Middle English quadrant, quadrante, from Latin quadrātum; form influenced by Etymology 1. Doublet of quadrat and quadrate.

  1. A square or quadrangle.

    There is an outcourt or quadrant, whereof one side is a gallery to walk in, being in length six hundred feet.