What is the meaning of Reduction?

The act, process, or result of reducing.

The amount or rate by which something is reduced, e.g. in price.

A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.

The process of rapidly boiling a sauce to concentrate it.

The rewriting of an expression into a simpler form.

A transformation of one problem into another problem, such as mapping reduction or polynomial-time reduction.

An arrangement for a far smaller number of parties, e.g. a keyboard solo based on a full opera.

A philosophical procedure intended to reveal the objects of consciousness as pure phenomena. (See phenomenological reduction.)

A medical procedure to restore a fracture or dislocation to the correct alignment, usually with a closed approach but sometimes with an open approach (surgery).

A reduced price of something by a fraction or decimal.

The ratio of a material's change in thickness compared to its thickness prior to forging and/or rolling.

Source: wiktionary.org