Quadrant (noun)

1. One of four equal parts of a plane or spherical surface that is divided by two perpendicular lines or planes.
2. A device used to measure angles in navigation or surveying.

Origin:

Derived from latin word "quadrans" meaning "quarter".

Examples:

1. The city is located in the northwest quadrant of the state.
2. The graph was divided into four quadrants.
3. The quadrant was used to measure the angle of the sun.
4. The quadrant is an important tool in navigation.
5. He used the quadrant to take the altitude of the star.