Editing PAC (section)

==Science and technology==
===Biology and medicine===
* [[Physician assistant#Nomenclature|Physician assistant, certified]], commonly abbreviated in the USA as PA-C
* Plasma [[aldosterone]] concentration
* [[Post-abortion care]]
* [[Pre-anesthesia checkup]]
* [[Premature atrial contraction]], a cardiac dysrhythmia
* [[Photoactivated adenylyl cyclase]], a light-sensitive protein
* [[Proanthocyanidin]], a type of flavanol
* [[Pulmonary artery catheterization]]

===Computing and industrial===
* Pacifica Coin, see [[List of TCP and UDP port numbers#Registered_ports]]
* [[Perceptual Audio Coder]], a lossy audio compression algorithm
* Pin Array Cartridge, an [[List of electronic component packaging types|integrated circuit packaging type]]
* [[Pointer Authentication Code]], an ARM security feature
* [[Probably approximately correct]], in machine learning
* [[Presentation–abstraction–control]], in software architecture
* Programmable Automation Controller; see [[Computer appliance]]
* [[Proxy auto-config]], a web browser technology

===Other science and technology===
* [[Perturbed angular correlation]]
* Polyaluminium chloride, less effective than [[aluminium chlorohydrate]] for water treatment
* [[Porting Authorisation Code]], to transfer mobile phone numbers
* [[Pseudo algebraically closed field]] (PAC field), in mathematics
* Powdered activated carbon, used in [[electrochemical regeneration]]
* ''[[Pure and Applied Chemistry]]'', the official monthly journal of IUPAC