APORON, or APORIME, a problem difficult to resolve, and which has never been resolved, though it be not in itself impossible. The word is derived from απορος, which signifies something very difficult and impracticable, being formed from the privative α, and πος, passage. When a question was proposed to any of the Greek philosophers, especially of the sect of academists; if he could not give a solution, his answer was Απορον, I cannot see through it. This word is also used by some law writers for an inexplicable speech or discourse.