Matching each member of one set with exactly one member of another set.
There is a one-to-one relationship between days with large cash shortages and his workdays.
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(chiefly, UK) Involving direct communication between two people.
a one-to-one discussion
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(mathematics, of a function) Injective, being an injection: having the property that no two elements of the domain are mapped to the same image.
a one-to-one teaching session
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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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