Planimetry

(n.) The mensuration of plane surfaces; -- distinguished from stereometry, or the mensuration of volumes.

Thesaurus Entries

altimetry, bathymetry, biometrics, biometry, cadastration, cartography, chorography, craniometry, geodesy, geodetics, goniometry, hypsography, hypsometry, mensuration, metrology, oceanography, psychometrics, psychometry, stereometry, surveying, topography