An acronym primarily standing for 'free of charge' — one of those handy shorthand terms that pops up in business emails, customer service contexts, and trade negotiations. When something is FOC, you're not paying a cent for it: complimentary, gratis, on the house. It's efficient, professional, and immediately understood in commercial contexts. The abbreviation keeps communication concise and is especially common in B2B correspondence, shipping invoices, and customer support tickets.
The replacement part will be sent FOC since the original was faulty from the factory.
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free of charge.
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flag of convenience.
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faint object camera.
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The vocabulary of software engineers, AI researchers, and anyone living in a terminal or on GitHub — from LLM to MCP, CORS to vibe coding, agentic to enshittification.
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