Pac

n. Pacific Ocean (located between the western Americas, Australia and Eastern Asia), largest ocean in the world

n. group that promotes its political interests by contributing to political campaigns and/or candidates in order to win favor (U.S. Politics)

PAC may refer to:BusinessPacific Aerospace Corporation, an aircraft manufacturing company based in Hamilton, New ZealandPakistan Aeronautical Complex, a military aircraft manufacturing facility in PakistanPlanned Amortization Class, a type of collateralized mortgage obligationPolar Air Cargo, a cargo airline based in Purchase, New York, USA
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Presentation-abstraction-control (PAC) is a software architectural pattern, somewhat similar to model-view-controller (MVC). PAC is used as a hierarchical structure of agents, each consisting of a triad of presentation, abstraction and control parts. The agents (or triads) communicate with each other only through the control part of each triad. It also differs from MVC in that within each triad, it completely insulates the presentation (view in MVC) and the abstraction (model in MVC), this provides the option to separately multithread the model and view which can give the user experience of very short program start times, as the user interface (presentation) can be shown before the abstraction has fully initialized.
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PAC abbr. premature atrial contraction PAC, n See aspirin, phenacetin, caffeine. PAC 1 Papular acrodermatitis of childhood–Gianotti-Crosti [more]PAC - Community and Resources

Noun
1. committee formed by a special-interest group to raise money for their favorite political candidates
(synonym) political action committee
(hypernym) committee, commission

CAP, Common Agricultural Politics