Simple Definition of presuppose
: to be based on the idea that something is true or will happen
: to require or depend on (something) in order to be true or exist
Examples of presuppose in a sentence
The rule presupposes a need to restrict student access to the library.
<the book presupposes its readers will already know something about the subject>
Origin of presuppose
Middle English, from Middle French presupposer, from Medieval Latin praesupponere (perfect indicative praesupposui), from Latin prae- + Medieval Latin supponere to suppose — more at suppose
First Known Use: 15th century
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