substitution

British  

/ ˌsʌbstɪˈtjuːʃən /

noun

1. the act of substituting or state of being substituted

2. something or someone substituted

3. maths the replacement of a term of an equation by another that is known to have the same value in order to simplify the equation

4. maths logic

   1. the uniform replacement of one expression by another

   2. an expression so derived from another

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Example Sentences

I listen now to some commentators drooling over substitutions that change games, and what a genius the manager was to make those changes.

From BBC

Nearly all substitutions were linked to lower depression risk, with one exception.

From Science Daily

"It's always worth it to try and get something out of the game," said Carrick of his substitution.

From BBC

Another important question is whether substitution played a role.

From Science Daily

After the match, Rosenior played down the importance of his substitutions, instead crediting the mentality of the players since his arrival.

From BBC