• (n.) An a priori principle.
A`pri·o'rism noun [ Confer French apriorisme .] An a priori principle. 
apriorism 1. Belief in, or reliance upon, a priori reasoning, arguments, or principles; specifically, the doctrine that knowledge rests upon principles that are self-evident to reason or are presupposed by experience in general. 2. A statement which makes evident a belief in a priori principles. 3. Philosophical belief that knowledge based on gen...
belief in, or reliance upon, a priori reasoning, arguments, or principles.