1.The action or fact of making something smaller or less in amount, degree, or size.
‘talks on arms reduction '
‘there had been a reduction in the number of casualties'
‘A reduction in competition is not what consumers want.'
‘A reduction in flights would have had little adverse effect on my progress through the program.'
‘A reduction in the use of pesticides and a clean-up of waterways are part of the plan.'
2.The amount by which something is made smaller, less, or lower in price.
‘special reductions on knitwear'
‘Because they buy goods directly from producers in huge quantities, they receive price reductions, which they then pass on to customers.'
‘The proposals call for sugar quota and price reductions of 16% and 33% respectively.'
‘Britain has seen sustained real price reductions in sourcing energy.'
‘Far from being a humanitarian action, the price reductions represent an attempt to preserve patent rights by diffusing international pressure for generic manufacturing.'
3.The simplification of a subject or problem to a particular form in presentation or analysis.
‘the reduction of classical genetics to molecular biology'
‘I find this reduction of the subject to a victim sad.'
‘Along with its adoption has come a simplification and reduction of the concept into forms that are more readily measured and calculated.'
‘This process of simplification and hybridization involves reduction of linguistic resources and restriction of use to such limited functions as trade.'
‘The reduction of reasoning to mechanical calculation that they identified is no clearer than in the inhuman logic of capitalist exchange.'
4.The process of converting an amount from one denomination to a smaller one, or of bringing down a fraction to its lowest terms.
‘In particular Zhang sees the reduction of fractions to a common denominator as hard.'
5.The halving of the number of chromosomes per cell that occurs at one of the two anaphases of meiosis.
‘Sexual plant reproduction involves a reduction of the somatic chromosome number by meiosis followed by a restoration of the somatic chromosome number by fertilization.'
‘Double reduction is a phenomenon that two sister chromatids of a chromosome sort into the same gamete.'
‘As a consequence of such a chromosome reduction, cellular metabolite and energy resources would not be expended to maintain and express the deleted genetic information.'
‘The reduction in cell number of the female gametophyte and embryo allows a large number of megasporogenesis events to occur in the ovary.'
6.A thing that is made smaller or less in size or amount.
7.An arrangement of an orchestral score for piano or for a smaller group of performers.
‘Although the composer himself prepared the piano reduction, one misses the vivid panoply of orchestral sonorities in La Valse.'
‘Ades' work is in 8 movements, and is so complex that it is not possible to do a piano reduction.'
‘The simple idea is that the student scores the piano reduction of, say, a Mozart symphony for the same forces as Mozart uses and then compares his version with Mozart's full score.'
‘The Apollo piano reduction is by Stravinsky himself, so the notes are sacrosanct, Matjias says.'
‘This is not in the piano reduction of the transcription.'
8.A thick and concentrated liquid or sauce made by boiling.
‘This was a deep, concentrated sauce, a model reduction of proper fish stock, wine and cream.'
‘Roast foie gras is served very hot indeed; it was sauced with a reduction of Banyuls.'
‘Add the reduction to the sauce and simmer for 10 minutes.'
‘Remember, most sauces are reductions, therefore the taste will be concentrated.'
‘Drizzle saffron sabayon on the plate and spoon clusters of the reserved diced pears and poaching liquid reduction around the sabayon.'
9.A copy of a picture or photograph made on a smaller scale than the original.
‘Experimentation is necessary to determine the dilution required for a particular reduction.'
‘Two of the works that they acquired were bought as reductions of the previously mentioned Napoleon at Fontainebleau and Napoleon Crossing the Alps.'
‘The painting itself did not subsequently spawn any of the painted repetitions and reductions that complicate the pedigree of Delaroche's later works.'
10.The action of remedying a dislocation or fracture by returning the affected part of the body to its normal position.
‘we must see if the fracture requires reduction'
‘Radiographs should be taken when the physician is uncertain of dislocation or reduction.'
‘However, this break would require reduction and casting, and orthopedic referral.'
‘Subsequent plain films and computed tomography confirmed satisfactory reduction with no acetabular fracture.'
‘Seven years prior to admission, he sustained a traumatic ankle fracture that required surgical reduction.'
11.The process or result of reducing or being reduced.
‘the reaction is limited to reduction to the hydrocarbon'
‘Oxidation and reduction are two processes that are quite common in chemical reactions.'
‘The chemical reduction of nitrate to nitrite requires metabolic energy.'
‘Secondary alcohols can be formed by reduction of the ketone by hydrogen gas in the presence of a catalyst.'
‘For example reduction of ethanol gives the alkene ethene.'
12.Substitution of a sound which requires less muscular effort to articulate.
‘the process of vowel reduction'
‘Also of interest are the examples in the lyrics of the sort of phonological reduction typical of the rapid speech of native English speakers.'
‘The process that changed ‘iced cream' to ‘ice cream' is called consonant cluster reduction, by the way.'