from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. The musical notation indicating that the piece should be played quieter than pianissimo. Abbreviation: ppp.
Sorry, no etymologies found.
So for example, for three pianos, it's pianississimo.
In the third measure, the volume changes to a pianississimo for the exposition of the theme.
L'Enfance du Christ "is probably the composer's most gentle choral work, characterized by numerous dynamic markings instructing that passages be played piano (soft), pianissimo (very soft), and even pianississimo