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English definition of “substitution”

substitution

noun [C/U]    /ˌsʌb·stɪˈtu·ʃən/
the act of using someone or something instead of another person or thing, or the person or thing used: [U] Substitution of less costly materials for bricks will hurt brick-makers. [C] People who have difficulty digesting beans can make substitutions.
(Definition of substitution noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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