The act of postulating or something postulated.
Something self-evident that can be assumed as the basis of an argument.
the act of presuming, or something presumed
the condition upon which something is presumed
the belief of something based upon reasonable evidence, or upon something known to be true
An inference that a trier of fact is either permitted or required to draw under certain factual circumstances (as prescribed by statute or case law) unless the party against whom the inference is drawn is able to rebut it with admissible, competent evidence.