■ abbreviation
1》 page.
2》 ( p- ) Chemistry para-.
3》 Brit. penny or pence.
4》 Music piano (softly).
5》 pico- (10 -12 ).
6》 Chemistry denoting electrons and orbitals possessing one unit of angular momentum. [from principal , orig. applied to lines in atomic spectra.]
■ symbol
1》 Physics pressure.
2》 Statistics probability.