Judged: two independent readers; copy check clear.
axiom
axiom An axiom is a general proposition taken to need no proof, or to be beyond proof, because it is treated as self-evident.
An axiom is a general proposition taken to need no proof, or to be beyond proof, because it is treated as self-evident. In historical usage, the term has also referred to ultimate principles of reasoning or knowledge, and in mathematics to the self-evident starting points of geometry and familiar general facts.