for a keyboard intended to sound strings.

The English word piano is a shortened form of the Italian pianoforte, derived from gravecembalo col piano e forte ("harpsichord with soft and loud"). Variations in volume (loudness) are produced in response to the pianist's touch (pressure on the keys): the greater the pressure, the greater the force of the hammer hitting the strings and the louder the sound produced and the stronger the attack. Invented in 1700, the fortepiano was