Meantone temperament
musical temperament
English: Meantone temperament is a musical temperament, which is a system of musical tuning. In general, a meantone is constructed the same way as Pythagorean tuning, as a chain of perfect fifths, but in a meantone, each fifth is narrowed by the same amount (or equivalently, each fourth widened) in order to make the other intervals like the major third closer to their ideal just ratios.