geodesy

n. १ (as, a branch of applied mathematics that determines by observation and measurement the exact positions of points and the figures and the areas of large portions of the earth’s surface, the shape and the size of the earth, etc.) भूपृष्ठामिति (स्त्री.), भूगणित (न.) २ (as, geodetic surveying) भूपृष्ठमितीय सर्वेक्षण (न.)