- To perform a measurement.
- In mathematics, a
**measure**is a way to assign non-negative real numbers to subsets of a given set, in order to "measure their sizes or probabilities". See measure (mathematics) for a treatment of the concept. - In music, a
**measure**is a unit of time in Western music. It represents a regular grouping of beats, a meter, as indicated in musical notation by the time signature. Measures are also called**barss**, since measures are separated by vertical bars (called**bar lines**) in musical notation.