Noun

(en noun)

The act of improving]]; advancement or growth; [[promote, promotion in desirable qualities; progress toward what is better; melioration; as, the improvement of the mind, of land, roads, etc.

* (Robert South)

I look upon your city as the best place of improvement .

* (Hugh Blair)

Exercise is the chief source of improvement in all our faculties.

* , chapter=19

, title= The Mirror and the Lamp , passage=Nothing was too small to receive attention, if a supervising eye could suggest improvements likely to conduce to the common welfare. Mr. Gordon Burnage, for instance, personally visited dust-bins and back premises, accompanied by a sort of village bailiff, going his round like a commanding officer doing billets.}}

* {{quote-magazine, date=2013-06-22, volume=407, issue=8841, page=70, magazine=(The Economist)

, title= Engineers of a different kind , passage=Private-equity nabobs bristle at being dubbed mere financiers.

The act of making profitable use or application of anything, or the state of being profitably employed; a turning to good account; practical application, as of a doctrine, principle, or theory, stated in a discourse.

* (Samuel Clarke)

A good improvement of his reason.

* (John Tillotson)

I shall make some improvement of this doctrine.

The state of being improved; betterment; advance; also, that which is improved; as, the new edition is an improvement on the old.

* (Joseph Addison)

The parts of Sinon, Camilla, and some few others, are improvements on the Greek poet.

Increase; growth; progress; advance.

* (Joseph Addison)

There is a design of publishing the history of architecture, with its several improvements and decays.

* (Robert South)

Those vices which more particularly receive improvement by prosperity.

(plural): Valuable additions or betterments, as buildings, clearings, drains, fences, etc., on premises.

(Patent Laws): A useful addition to, or modification of, a machine, manufacture, or composition.

Noun

(en noun)

The act, process, or result of reducing.

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

A 5% reduction in robberies

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

(cooking) The process of rapidly boiling a sauce to concentrate it.

(mathematics) The rewriting of an expression into a simpler form.

(computability theory) a transformation of one problem into another problem, such as mapping reduction or polynomial reduction.

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

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

(medicine) A medical procedure to restore a fracture or dislocation to the correct alignment.