Definitions

1. noun

the branch of applied mathematics concerned with the measurement of the Earth’s size and shape, including the study of latitude, longitude, and altitude, and the determination of the coordinates of points on the Earth’s surface.

“The geodesist used geodesia to calculate the exact location of the survey markers.”

2. noun

a system of measurement or reference used in geodesy.

“The geodesic system is used to determine the coordinates of points on the Earth’s surface.”