Mensuration

Noun

1. The act or process of measuring; measurement.
2. The study of measurement, especially the derivation and use of algebraic formulae to measure the areas, volumes and different parameters of geometric figures.
3. 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.
4. The use of quantitative measurements of forest stand to determine stand timber volume, productivity, and health.