approximationn.[Cf. F. approximation, LL. approximatio.]1. The act of approximating; a drawing, advancing or being near; approach; also, the result of approximating.()The largest capacity and the most noble dispositions are but an approximation to the proper standard and true symmetry of human nature. (I. Taylor.)2. An approach to a correct estimate, calculation, or conception, or to a given quantity, quality, etc.()3. (Math.) A continual approach or coming nearer to a result; as, to solve an equation by approximation.()