·noun A value that is nearly but not exactly correct.
II. Approximation ·noun A continual approach or coming nearer to a result; as, to solve an equation by approximation.
III. Approximation ·noun An approach to a correct estimate, calculation, or conception, or to a given quantity, quality, ·etc.
IV. Approximation ·noun The act of approximating; a drawing, advancing or being near; approach; also, the result of approximating.