Commonly stands for various organizations or concepts, including 'Common Access Card' or 'Central Air Conditioning,' depending on context.
Modern acronym with multiple meanings depending on field of use. The military 'Common Access Card' meaning emerged in the 2000s as part of digital security systems.
CAC demonstrates how modern acronyms can simultaneously mean dozens of different things - from military security cards to air conditioning systems. Context has become crucial for understanding abbreviations in our acronym-saturated world.
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