axiom ,
n :
(philosophy) A seemingly self-evident or necessary truth which is based on assumption; a principle or proposition which cannot actually be proved or disproved. (logic, mathematics, proof theory) A fundamental assumption that serves as a basis for deduction of theorems (for example, "Through a pair of distinct points there passes exactly one straight line", and "All right angles are congruent"); a postulate. An established principle in some artistic practice or science that is universally received.
