pianissimo[pē′ə nis′i mō′; It pyä nēs′sē mō̂′]
Origin: It, superlative of piano: see piano,
Used by arrangement with John Wiley & Sons, Inc.
Musicadverb & adj. Abbr. pp
Origin: Italian, superlative of piano, soft; see piano2.
pianissimo - Cultural Definition
A musical direction meaning “to be performed very softly”; the opposite of fortissimo.