reduction.
The act, process, or result of reducing.
Meaning & usage
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
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).
closed reduction
open reduction and internal fixation
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.
A religious settlement created during a mission by Spanish or Portuguese colonists with the intent of evangelizing Christianity to the local population.
Spanish reductions in Mexico were common during the 18th century.
Where this word comes from
From Middle English reduccion, a borrowing from Old French reducion, from Latin reductiō, reductiōnem. Equivalent to reduce + -tion.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.