postulate
🇺🇸
/ˈpɑːstʃəleɪt/
🇬🇧
/ˈpɒstʃəleɪt/
to assume something is true without proof, as a basis for further investigation or argument.
Scientists postulated that the new planet could have rings like Saturn.
a statement or principle that is accepted as true, especially in order to provide a basis for an argument or theory.
His theory was based on a set of postulates that were widely accepted by the scientific community.