Definitions

1. noun

the loudest possible volume in music or sound, typically used to describe the maximum dynamic range in a composition.

“The orchestra reached a fortissimo in the final movement of the symphony.”

2. adverb

at the loudest possible volume, extremely loudly

“The band played fortissimo in the last part of the concert.”

3. interjection

an expression used to emphasize extreme loudness

“Fortissimo! The crowd erupted in cheers as the rock band took the stage.”