n. The process of measuring; the ascertainment of the numerical amount of any quantity.n. The numerical amount or measure of anything, whether a number, the dimensions of a solid, the bulk of a fluid, mass, duration, or degree.n. In law, ascertainment and assignment of the due proportion: as, admeasurement of damages, or of dower in an estate; admeasurement of the right of an individual in a common pasture.n. Sometimes called admensuration.