areometry
/æriːˈɒmɪtri/Definitions
1. noun
The measurement of the area of a three-dimensional object or the area of its surface.
“The engineer used areometry to calculate the surface area of the new building design.”
2. noun
A branch of mathematics dealing with the measurement of the area of objects, especially in relation to their surface areas.
“The mathematician was a specialist in areometry and had published numerous papers on the subject.”