1. The act or operation of rectifying; as, the rectification of an error; the rectification of spirits. After the rectification of his views, he was incapable of compromise with profounder shapes of error. (De Quincey)
2. (Science: geometry) The determination of a straight line whose length is equal a portion of a curve.
(Science: astronomy) Rectification of a globe, its adjustment preparatory to the solution of a proposed problem.
Origin: Cf. F. Rectification.