reduction
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See also: réduction
English
Etymology
From Middle English reduccion, a borrowing from Old French reducion, from Latin reductiō, reductiōnem.
Pronunciation
- IPA(key): /ɹɪˈdʌkʃən/
Audio (Southern England) (file) - (Malaysia, Singapore) IPA(key): /ɹiˈdɑk.ʃən/
- Rhymes: -ʌkʃən
- Hyphenation: re‧duc‧tion
Noun
reduction (countable and uncountable, plural reductions)
- The act, process, or result of reducing.
- 1961 January, “The North-East London electrification of the Great Eastern Line”, in Trains Illustrated, page 18:
- With the cutting out of the previous recovery times for electrification work, curtailment of station times and acceleration, considerable reductions have been made in the overall schedules.
- 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, usually with a closed approach but sometimes with an open approach (surgery).
- Synonym: taxis
- Coordinate terms: arthroplasty, arthrodesis
- closed reduction
- open reduction and internal fixation
- (paying) A reduced price of something by a fraction or decimal.
- (metalworking) The ratio of a material's change in thickness compared to its thickness prior to forging and/or rolling.
- 2016, Gordon L. Robertson, Food Packaging Principles and Practice, 3rd edition, page 191:
- The final stage of thickness reduction (typically 90% from about 2mm to <0.2mm) is carried out by cold rolling.
Synonyms
- (act, process, or result of reducing): decline, lessening; See also Thesaurus:diminution
- (amount by which something is reduced): extract, reduction; See also Thesaurus:decrement
Antonyms
- (antonym(s) of “act, process, or result of reducing”): elevation, expansion, increase, promotion; See also Thesaurus:augmentation
- (antonym(s) of “amount by which something is reduced”): addition, supplement; See also Thesaurus:adjunct
- (antonym(s) of “chemistry”): oxidation
Derived terms
- amnioreduction
- beta reduction
- bioreduction
- Birch reduction
- boob reduction
- breast reduction
- carboreduction
- carbothermal reduction
- Clemmensen reduction
- Cook reduction
- cytoreduction
- deuteroreduction
- electroreduction
- eta reduction
- harm reduction
- hazard reduction burn
- irreduction
- Karp reduction
- ketoreduction
- leukoreduction
- magnesiothermic reduction
- Meerwein-Ponndorf-Verley reduction
- monoreduction
- nitroreduction
- nonreduction
- orchestrated objective reduction
- overreduction
- oxidation-reduction
- phenomenological reduction
- photoreduction
- postreduction
- prereduction
- prolongational reduction
- pseudoreduction
- reductional
- reduction division
- reduction drive
- reduction furnace
- reduction in force
- reductionism
- reductionist
- reduction set
- reduction to the absurd
- rereduction
- semireduction
- spot reduction
- tax reduction
- Turing reduction
- vowel reduction
Related terms
Translations
act, process, or result of reducing
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amount or rate by which something is reduced
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chemistry: reaction in which electrons are gained and valence is reduced
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cooking: process of concentrating a sauce
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math: rewriting an expression
computability theory: a transformation of one problem into another problem
medical procedure to restore a fracture
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