The sixteenth letter of the English alphabet, called pee and written in the Latin script.

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

(UK) Abbreviation of probationary (used on a vehicle's P-plate) / (Australia) Abbreviation of provisional (used on a vehicle's P-plate) / (anatomy, medicine) Abbreviation of pulmonary.

(computing theory) The set of all problems that are solvable in polynomial time by a deterministic Turing machine / (law) Initialism of patient. (the subject of proceedings in the Court of Protection)

(sports) Initialism of position. (prefixed to a number) (indicates the placing of a competitor in (starting, during, after) a competition)

Nonstandard spelling of pp. Abbreviation of Percentage point.

(organic chemistry) para-

(programming) A very low-level code that is machine-independent and enables a compiled file to be run on different processor types.

(euphemistic) An interjection in response to smelling an unpleasant scent; an exaggerated pronunciation of pew.

(UK, Australia) A plastic square sticker consisting of a large red letter P on a white background, placed on a vehicle to indicate that the driver only has a provisional (UK: probationary) driver's licence.