n. The act of correcting, or of bringing into conformity to a standard, model, or original: as, the correction of an arithmetical computation; the correction of a proof-sheet.n. The act of noting and pointing out for removal or amendment, as errors, defects, mistakes, or faults of any kind.n. The change or amendment indicated or effected; that which is proposed or substituted for what is wrong; an emendation: as, the corrections on a proof.n. Correctness.n. In mathematics and physics, a subordinate quantity which has to be taken into account and applied in order to insure accuracy, as in the use of an instrument or the solution of a problem.n. The act of counteracting or removing whatever is undesirable, inconvenient, or injurious: as, the correction of abuses in connection with the public service; the correction of acidity of the stomach.n. In optics, the elimination of spherical or chromatic aberration from an eyepiece or object-glass; also, loosely, the error produced by aberration of the two kinds.n. The rectification of faults, or the attempt to rectify them, as in character or conduct, by the use of restraint or punishment; that which corrects; chastisement; discipline; reproof.