: any of various measuring instruments capable of indicating two or more quantities.
What is a Polymeter in music?
A polymeter is two or more meters happening at the same time. These meters share a common subdivision, so in essence, a polymeter is different groupings of the same note values being played alongside one another. ... For example, four quarter notes being played in the same amount of time as 3 half note triplets.
Whats the difference between a polyrhythm and Polymeter?
In fact, polymeter and polyrhythm are not two different things, but two ends of a spectrum. For instance, if you take Ulf's example of a five against four polymeter but just play the first note of every group of five and of every group of four, you have a five against four polyrhythm.