Political correctness.

Initialism of perchloroethylene. / (energy) Initialism of power conversion efficiency. / (medicine) Initialism of prenatal cocaine exposure.

(medicine) Initialism of posterior capsular opacification.

(government, UK) Initialism of Parliamentary Counsel Office. / (government, Westministerian Parliament) Initialism of Privy Council Office.

Initialism of postchemotherapy cognitive impairment.

Abbreviation of Proto-Celtic.

simple past tense and past participle of PC

present participle of PC

(computing, initialism, payment) Initialism of Payment Card Industry Data Security Standard (a proprietary information security standard for organizations that handle branded credit cards from the major card schemes)

plural of PCI (“p”)