relating to or derived by reasoning from self-evident propositions; deductive: compare a posteriori
a priori reasoning
argue a priori
relating to something that can be known by reason alone without recourse to experience
true or false by definition or convention alone, without further investigation
a priori statements
said of argument or reasoning: without examination or analysis; presumptive
something that cannot be assumed a priori
apriority /-ʹoriti/ noun
[Latin a priori, from the former]