Postulate is defined as to claim, demand or assert something as truth.(verb)
The definition of a postulate is something accepted as truth and used as the basis for an argument or theory.(noun)
An example of postulate is the fact that the world is not flat to support the argument of strong scientific development over the centuries.
See postulate in Webster's New World College Dictionary
Origin: < L postulatus, pp. of postulare, to demand < base of poscere, to demand < IE *pṛskā, question < base *per-, to ask > Ger frage, question
Origin: ModL postulatum < neut. of L postulatus
See postulate in American Heritage Dictionary 4
transitive verb pos·tu·lat·ed, pos·tu·lat·ing, pos·tu·lates
Origin: Medieval Latin postulāre, postulāt-, to nominate to a bishopric, to assume
Origin: , from Latin, to request; see prek- in Indo-European roots.
Learn more about postulate