mensuration

noun4

1. •
   The act or process of measuring; measurement.

   • It would seem that in Avebury, Stonehenge, and Malta the mystery cult of menstruation/mensuration reached its most consummate development. — 1981
2. •
   The study of measurement, especially the derivation and use of algebraic formulae to measure the areas, volumes and different parameters of geometric figures.

   • With the passage of time I have realized that the illustrations can also serve, to some extent, to make mensuration more readily possible. — 1992
3. •
   The use of quantitative measurements of forest stand to determine stand timber volume, productivity, and health.
4. •
   A 13th century system for governing rhythmic relationships in music that was a precursor to the modern use of time signatures; The use of mensural notation.