postulate, posit -- ((logic) a proposition that is accepted as true in order to provide a basis for logical reasoning)
Overview of verb posit
The verb posit has 3 senses
situate, fix, posit, deposit -- (put (something somewhere) firmly; "She posited her hand on his shoulder"; "deposit the suitcase on the bench"; "fix your eyes on this spot")
submit, state, put forward, posit -- (put before; "I submit to you that the accused is guilty")
postulate, posit -- (take as a given; assume as a postulate or axiom; "He posited three basic laws of nature")