(computing, initialism) Initialism of Peripheral Component Interconnect (a type of expansion slot on a motherboard.) / (cardiology) Initialism of percutaneous coronary intervention.

plural of PCI (“p”)

(computing) PCI (the computer bus), as opposed to the newer PCI Express.

(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)

present participle of PC

A policy of political correctness.