irreducible

adjective

ir·​re·​duc·​ible ˌir-i-ˈdü-sə-bəl How to pronounce irreducible (audio)
-ˈdyü-
Synonyms of irreduciblenext
1
: impossible to transform into or restore to a desired or simpler condition
an irreducible matrix
specifically : incapable of being factored into polynomials of lower degree with coefficients in some given field (such as the rational numbers) or integral domain (such as the integers)
an irreducible equation
2
: impossible to make less or smaller
an irreducible minimum
irreducibility noun
irreducibly adverb

Examples of irreducible in a Sentence

They thought the world was made up of four irreducible elements: earth, air, fire, and water.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Each individual possesses irreducible dignity because each is created in the image of God. William E. Lori, Baltimore Sun, 25 May 2026 Remedy: Take the time to pressure-test every meaningful investment (resources and dollars) and break each one down to its most basic, irreducible truth. David Turner, Forbes.com, 26 Mar. 2026 While reading for cinematography, editing, and sound are all meaningful aspects of film criticism, the star is perhaps the only filmic element previously irreducible to purely digital forms. Literary Hub, 3 Mar. 2026 Because the tree should be irreducible, there is no circumstance where n2 can exist, so n2 = 0. Manon Bischoff, Scientific American, 1 Mar. 2026 See All Example Sentences for irreducible

Word History

First Known Use

1633, in the meaning defined at sense 1

Time Traveler
The first known use of irreducible was in 1633

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Cite this Entry

“Irreducible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irreducible. Accessed 5 Jun. 2026.

Kids Definition

irreducible

adjective
ir·​re·​duc·​ible ˌir-i-ˈd(y)ü-sə-bəl How to pronounce irreducible (audio)
: not reducible
irreducibility noun
irreducibly adverb

Medical Definition

irreducible

adjective
ir·​re·​duc·​ible ˌir-i-ˈd(y)ü-sə-bəl How to pronounce irreducible (audio)
: impossible to bring into a desired or normal state
an irreducible hernia
irreducibility noun
plural irreducibilities

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