pianissimo Meaning, Definition & Usage

  1. noun (music) low loudness
    piano.
  2. adjective satellite chiefly a direction or description in music; very soft
  3. adverb a direction in music; to be played very softly
    very softly.

WordNet

Pi`a*nis"si*mo adjective
Etymology
It., superl. of piano.
Definitions
  1. (Mus.) Very soft; -- a direction to execute a passage as softly as possible. (Abbrev. pp.)

Webster 1913