n. In music:Slow; slowly, leisurely, and with grace. When repeated, adagio, adagio, it directs the performance to be very slow.Slow: as, an adagio movement.n. A slow movement; also, a piece of music or part of a composition characterized by slow movement.Special varieties of movement or style are indicated by adding other terms, as: adagio assai or molto, very slow; adagio non troppo, slow, but not too much so; adagio cantabile or sostenuto, slow, with a flowing or sustained movement; adagio patetico, slow and with pathos; adagio pesante, slow, with heavy accents; adagio religioso, slow and in the church style; etc.