pre·sup·pose [ pr sə pṓz ](past and past participlepre·sup·posed, present participlepre·sup·pos·ing, 3rd person present singularpre·sup·pos·es)
transitive verb
Definition:
1. require something as prior condition: to make something necessary if a particular thing is to be shown to be true or false. The sentence "Fred loves his daughter" presupposes that Fred has a daughter.
2. assume something in advance: to believe that a particular thing is true before there is any proof of it the tendency to presuppose that everybody will understand English
