p Syllabification: (p)Translate p | into French | into German | into Italian | into Spanish Definition of p abbreviation page. (p-) [in combination] Chemistry para-:p-xylene British penny or pence. Music piano (softly). [in combination] (in units of measurement) pico- (1012):a 220 pf capacitor Chemistry denoting electrons and orbitals possessing one unit of angular momentum. [from principal, originally applied to lines in atomic spectra] symbol Physics pressure. Statistics probability. p in other Oxford dictionaries Definition of p in the British & World English dictionary