/ Dictionary / Index P pianissimo: Meaning and Definition of Find definitions for: pi•a•nis•si•mo Pronunciation: (pē"u-nis'u-mō"It.pyä-nēs'sē-mô"), [key] — adj., adv., n., pl. -mos. —adj. very soft. —adv. very softly. —n. a passage or movement played in this way. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pianissimo (Thesaurus) pianism pianist Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language