Meaning & use
substitution
The act of putting one person or thing in place of another.
See it in a sentence
The coach made a substitution in the final minutes to bring in fresh energy.
A simple substitution of butter for oil changed the texture of the cake.
A note on using this word
In sport, a substitution means swapping one player for another; in algebra, it means replacing a variable with a value or expression.
Words with a similar meaning
replacementswap
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