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substituend

noun
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sub·​stit·​u·​end | \ səbzˈtichəˌwend, -bˈst- \
plural -s

Definition of substituend

: something that can be or is substituted in a logical relation

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History and Etymology for substituend

New Latin substituendum

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“Substituend.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/substituend. Accessed 20 Oct. 2020.

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