What does reduction mean?

Definitions for reduction
rɪˈdʌk ʃənre·duc·tion

Here are all the possible meanings and translations of the word reduction.

Princeton's WordNet

  1. decrease, diminution, reduction, step-downnoun

    the act of decreasing or reducing something

  2. reduction, reducingnoun

    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

  3. reduction, simplificationnoun

    the act of reducing complexity


  1. reductionnoun

    The act, process, or result of reducing.

  2. reductionnoun

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

    A 5% reduction in robberies

  3. reductionnoun

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

  4. reductionnoun

    The process of rapidly boiling a sauce to concentrate it.

  5. reductionnoun

    The rewriting of an expression into a simpler form.

  6. reductionnoun

    a transformation of one problem into another problem, such as mapping reduction or polynomial reduction.

  7. reductionnoun

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

  8. reductionnoun

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

  9. Etymology: From reduccion, from reducion, from reductio.

Samuel Johnson's Dictionary

  1. Reductionnoun

    Etymology: reduction, Fr. from reductus, Lat.

    Some will have these years to be but months; but we have no certain evidence that they used to account a month a year; and if we had, yet that reduction will not serve. Matthew Hale.

Webster Dictionary

  1. Reductionnoun

    the act of reducing, or state of being reduced; conversion to a given state or condition; diminution; conquest; as, the reduction of a body to powder; the reduction of things to order; the reduction of the expenses of government; the reduction of a rebellious province

  2. Reductionnoun

    the act or process of reducing. See Reduce, v. t., 6. and To reduce an equation, To reduce an expression, under Reduce, v. t

  3. Reductionverb

    the correction of observations for known errors of instruments, etc

  4. Reductionverb

    the preparation of the facts and measurements of observations in order to deduce a general result

  5. Reductionverb

    the process of making a copy of something, as a figure, design, or draught, on a smaller scale, preserving the proper proportions

  6. Reductionverb

    the bringing of a syllogism in one of the so-called imperfect modes into a mode in the first figure

  7. Reductionverb

    the act, process, or result of reducing; as, the reduction of iron from its ores; the reduction of aldehyde from alcohol

  8. Reductionverb

    the operation of restoring a dislocated or fractured part to its former place


  1. Reduction

    In philosophy, reduction is the process by which one object, property, concept, theory, etc., is shown to be explicable in terms of another, lower level, entity. In particular, a concern of philosophy is as to the scope of physical theory, and whether, for example, all events are ultimately physical events, a discussion closely related to the topic of causal closure. In science, such reduction is generally desirable, because it explains why and how the thing which is being reduced exists, and because it promotes conceptual and theoretical economy. Reducing chemical properties to properties of atoms thus explains these properties and integrates them into a single explanatory framework, that of atomic structure. For example, we say that physical properties such as the boiling point of a substance are reducible to that substance’s molecular properties, because statistical mechanics explain why a liquid boils at a certain temperature using only the properties of its constituent atoms. Thus we might also describe reduction as a process analogous to absorption, by which one theory is wholly subsumed under another. Reductionism can be divided into three general areas – methodological, theoretical, and ontological – and reduction into two – theoretical and ontological.

Dictionary of Military and Associated Terms

  1. reduction

    The creation of lanes through a minefield or obstacle to allow passage of the attacking ground force.

Matched Categories

British National Corpus

  1. Spoken Corpus Frequency

    Rank popularity for the word 'reduction' in Spoken Corpus Frequency: #2191

  2. Written Corpus Frequency

    Rank popularity for the word 'reduction' in Written Corpus Frequency: #2038

  3. Nouns Frequency

    Rank popularity for the word 'reduction' in Nouns Frequency: #761

How to pronounce reduction?

How to say reduction in sign language?


  1. Chaldean Numerology

    The numerical value of reduction in Chaldean Numerology is: 1

  2. Pythagorean Numerology

    The numerical value of reduction in Pythagorean Numerology is: 1

Examples of reduction in a Sentence

  1. Roy Silverstein:

    The absolute difference in risk is very small, the risk reduction may be statistically significant, but it is a small change in actual risk. Roy Silverstein never would tell somebody who was Type O that they were at smaller risk of infection.

  2. Jason Pride:

    Manufacturing PMI's are a good gauge of economic growth and have risen materially in the last year, coupled with the ambitious balance sheet reduction plan, monetary policy tightening could prove a larger headwind than anticipated. Normalizing monetary policy is a good thing, but the Fed should be careful of the pace.

  3. Fei Liu:

    This year, the reduction rate is more significant than in past years and it has lasted longer.

  4. John Schuerholz:

    It is not an objective of ours to achieve a dramatic time reduction right away, it is more important to develop a culture of better habits and a structure with more exact timings for non-game action.

  5. Le Peuch:

    To be more efficient is the highest driver of future footprint reduction for the industry.

Popularity rank by frequency of use


Translations for reduction

From our Multilingual Translation Dictionary

Get even more translations for reduction »


Find a translation for the reduction definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:

Discuss these reduction definitions with the community:



    Use the citation below to add this definition to your bibliography:


    "reduction." Definitions.net. STANDS4 LLC, 2022. Web. 7 Dec. 2022. <https://www.definitions.net/definition/reduction>.

    Are we missing a good definition for reduction? Don't keep it to yourself...

    Browse Definitions.net

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!


    Are you a words master?

    expressing yourself readily, clearly, effectively
    • A. eloquent
    • B. unsealed
    • C. arbitrary
    • D. elusive

    Nearby & related entries:

    Alternative searches for reduction: