Crescendo /(kr?s-s?n"d?; It. kr?-sh?n"d?)/

Cres·cen·do

Crescendo

a. & adv.
  1. With a constantly increasing volume of voice; with gradually increasing strength and fullness of tone; -- a direction for the performance of music, indicated by the mark, or by writing the word on the score. (Mus.)

Crescendo

n.
  1. A gradual increase in the strength and fullness of tone with which a passage is performed. (Mus.)