Meaning of “substitution” in the English Dictionary

american-english dictionary

"substitution" in American English

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substitutionnoun [ C/U ]

us /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” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"substitution" in Business English

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substitutionnoun [ C or U ]

uk /ˌsʌbstɪˈtjuːʃən/ us

the act of using something new or different instead of something else, or the new thing that is used:

the substitution of sth (for sth) The government plans to encourage the substitution of cheap generic drugs for expensive brand-name ones.
Telecommuting is not a substitution for child care.

(Definition of “substitution” from the Cambridge Business English Dictionary © Cambridge University Press)