sum·​ma·​tion | \ (ˌ)sə-ˈmā-shən How to pronounce summation (audio) \

Definition of summation

1 : the act or process of forming a sum : addition
2 : sum, total
3 : cumulative action or effect especially : the process by which a sequence of stimuli that are individually inadequate to produce a response are cumulatively able to induce a nerve impulse
4 : a final part of an argument reviewing points made and expressing conclusions

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Other Words from summation

summational \ (ˌ)sə-​ˈmā-​shnəl How to pronounce summation (audio) , -​shə-​nᵊl \ adjective

Examples of summation in a Sentence

A summation can be found at the end of the report. We gave a summation of our discovery. The defense attorneys and prosecutors are set to make their final summations today.
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Recent Examples on the Web Favoring new interviews with people who knew her instead of celebrity testimonials, Tina serves both as an introduction to the uninitiated and an important summation of her remarkable life and talent for longtime fans. Joe Lynch, Billboard, "'Tina' Doc's Oscar-Winning Directors on Bringing a Fresh POV to Tina Turner's Life," 25 Mar. 2021 The summation of all this news can keep marketers looking at a mountain of data guardrails and changes that may be impossible to climb. David Gasparyan, Forbes, "IDFA Reckoning Shows The Value Of Attribution Technology," 9 Apr. 2021 Those who know Kim’s taste will know that a DSM x Nordstrom’s shop-in-shop is a neat summation of her style. Steff Yotka, Vogue, "Is the Collaboration Between Nordstrom and Dover Street Market the Future of Retail?," 5 Apr. 2021 Apparently the answer is like this: with a beautiful, moving film that feels like a summation of who Tina Turner is, yet also still leaves viewers wanting just a little bit more. Jen Chaney, Vulture, "Even If You Know Tina Turner’s Story, You Should Watch Tina," 24 Mar. 2021 That might seem like an incongruously dry title for a summation of four years that ended with a violent assault on the United States Capitol. Jennifer Schuessler, New York Times, "The Trump Presidency Is History. They’re Writing the First Draft.," 22 Mar. 2021 Like everyone, Biggie Smalls was the summation of all of his life’s experiences. Washington Post, "How ‘Biggie: I Got a Story to Tell’ can show the way for how rappers are remembered," 6 Mar. 2021 The event concluded Wednesday afternoon with a rapid-fire summation of dozens of ideas about how the city could adapt to emerging social, demographic, and economic trends. Steven Litt, cleveland, "Will big ideas from “Building the 21st Century City’' symposium shape Cleveland’s future?," 5 Mar. 2021 In summation, this centerpiece was made in Japan by an unknown company sometime in the mid to late 1950s and was imported into this country by Arnart Creations, which was probably responsible for the Art Nouveau style design. Helaine Fendelman And Joe Rosson, Star Tribune, "Centerpiece is in Art Nouveau style, but not of that era," 26 Jan. 2021

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

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First Known Use of summation

1760, in the meaning defined at sense 1

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Time Traveler for summation

Time Traveler

The first known use of summation was in 1760

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Statistics for summation

Last Updated

3 May 2021

Cite this Entry

“Summation.” Dictionary, Merriam-Webster, Accessed 11 May. 2021.

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More Definitions for summation



English Language Learners Definition of summation

formal : a brief description of the most important information about something
US, law : a final speech made by a lawyer in a court of law to give a summary of the main arguments in a case


sum·​ma·​tion | \ (ˌ)sə-ˈmā-shən How to pronounce summation (audio) \

Medical Definition of summation

: cumulative action or effect especially : the process by which a sequence of stimuli that are individually inadequate to produce a response are cumulatively able to induce a nerve impulse — see spatial summation, temporal summation


sum·​ma·​tion | \ sə-ˈmā-shən How to pronounce summation (audio) \

Legal Definition of summation

More from Merriam-Webster on summation

Thesaurus: All synonyms and antonyms for summation Encyclopedia article about summation

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