(medicine, education) Initialism of anatomy and physiology. / (aviation) Initialism of airframe and powerplant.

Initialism of The Great Atlantic & Pacific Tea Company: an American chain of grocery stores that operated from 1859 to 2015.

(medicine) Initialism of anterior and posterior. / (business) Initialism of advertising and promotional.

Initialism of postage and packing/packaging. / Initialism of policies and procedures.

(grammar) Alternative form of p.p.

(Oxford University slang) Initialism of Port and Policy.

Alternative form of p&p (“postage and packing”) / (linguistics) Initialism of principles and parameters.

(role-playing games) pen-and-paper, usually specifically in reference to the term "pen-and-paper role-playing game", an alternate term for a tabletop role-playing game

(chiefly US) Alternative spelling of P.M. (“post meridiem”) or PM

Abbreviation of park. / Abbreviation of phone. / Abbreviation of pager. / Abbreviation of passenger. / Abbreviation of pocket. / Alternative form of ₱ (Philippine peso) / (chess) Abbreviation of pawn.