mensuration

noun

1. the branch of geometry that deals with the measurement of length, area, or volume.
2. the act or process of measuring.

noun

1. the study of the measurement of geometric magnitudes such as length
2. the act or process of measuring; measurement

n.“act of measuring,” 1570s, from Middle French mensuration and directly from Late Latin mensurationem (nominative mensuratio) “a measuring,” noun of action from past participle stem of mensurare “to measure” (see measure (v.)).