A decrescendo is a musical term that indicates a gradual decrease in volume or intensity. It is often notated in sheet music with the word "decrescendo" or the symbol "decresc." This technique helps create dynamic contrast in a piece, allowing composers to convey emotions and enhance the overall musical experience. In orchestral music, a decrescendo can be used to transition smoothly between sections or to build tension before a climactic moment. Musicians, including conductors and instrumentalists, pay close attention to decrescendos to ensure they execute the intended dynamics, contributing to the piece's expressive quality.