reduction — English Dictionary

Noun

1. The act, process, or result of reducing.

   Usage

   • Countable
   • Uncountable

   Examples

   More examples (1)

   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.

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

   Usage

   • Countable
   • Uncountable

   Examples

   A 5% reduction in robberies

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

   Usage

   • Countable
   • Uncountable

4. The process of rapidly boiling a sauce to concentrate it.

   Usage

   • Countable
   • Uncountable

5. The rewriting of an expression into a simpler form.

   Usage

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   • Uncountable

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

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   • Countable
   • Uncountable

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

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   • Countable
   • Uncountable

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

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   • Countable
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9. 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).

   Usage

   • Countable
   • Uncountable

   Synonyms

   taxis

   Examples

   closed reduction

   open reduction and internal fixation

10. A reduced price of something by a fraction or decimal.

    Usage

    • Countable
    • Uncountable

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

    Usage

    • Countable
    • Uncountable

    Examples

    The final stage of thickness reduction (typically 90% from about 2mm to <0.2mm) is carried out by cold rolling.

12. A religious settlement created during a mission by Spanish or Portuguese colonists with the intent of evangelizing Christianity to the local population.

    Usage

    • Countable
    • Historical
    • Uncountable

    Examples

    Spanish reductions in Mexico were common during the 18th century.

Noun

1. the act of decreasing or reducing something

   Synonyms

   decreasediminutionstep-down

   Broader terms

   change of magnitude

2. any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent

   Synonyms

   reducing

   Broader terms

   chemical reactionreaction

3. the act of reducing complexity

   Synonyms

   simplification

   Broader terms

   change