reduction

noun re·duc·tion \ ri-ˈdək-shən \
Updated on: 18 Nov 2017

Definition of reduction

1 : the act or process of reducing : the state of being reduced
2 a : something made by reducing
b : the amount by which something is reduced
3
[Spanish reducción, from Latin reduction-, reductio]
: a South American Indian settlement directed by Jesuit missionaries
4 : meiosis 2; specifically : production of the gametic chromosome number in the first meiotic division

reductional

play \ri-ˈdək-shnəl, -shə-nᵊl\ adjective

Examples of reduction in a Sentence

  1. a drastic reduction in size

  2. Many voters want to see some reduction of the deficit.

  3. There is a 20 percent reduction on selected items during this sale.

Recent Examples of reduction from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reduction.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of reduction

Middle English reduccion restoration, from Middle French reducion, from Late Latin & Latin; Late Latin reduction-, reductio reduction (in a syllogism), from Latin, restoration, from reducere

Other Chemical Engineering Terms


REDUCTION Defined for English Language Learners

reduction

noun

Definition of reduction for English Language Learners

  • : the act of making something smaller in size, amount, number, etc. : the act of reducing something

  • : an amount by which something is reduced


REDUCTION Defined for Kids

reduction

noun re·duc·tion \ ri-ˈdək-shən \

Definition of reduction for Students

1 : the act of making something smaller or less : the state of being made smaller or less
  • a reduction in noise
2 : the amount by which something is made smaller or less

Medical Dictionary

reduction

noun re·duc·tion \ ri-ˈdək-shən \

medical Definition of reduction

1 : the replacement or realignment of a body part in normal position or restoration of a bodily condition to normal
2 : the process of reducing by chemical or electrochemical means
3 : the psychological diminishment of emotion or needs through activity or adjustment
4 : meiosis; specifically : production of the gametic chromosome number in the first meiotic division


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