de·cre·scen·do (dā'krə-shěn'dō, dē'-) adv.
& adj. Abbr. dec. With gradually diminishing force or loudness. Used chiefly as a direction. n.
pl.de·cre·scen·dos
A gradual decrease in force or loudness.
A decrescendo passage.
[Italian, gerund of decrescere, to decrease, from Latin dēcrēscere; see decrease.]