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

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.
Recent Examples on the Web Only in the moving final scenes does real pathos intrude, but even that’s slathered in corny summation dialogue that borders on sweet self-parody. David Rooney, The Hollywood Reporter, 25 Apr. 2022 Decadent, spurious and yet well executed — a concise summation of the weaknesses and strengths of Neo-Romanticism. Washington Post, 19 Apr. 2022 The convention rules allot McEntee just one minute to argue for his change, followed by 4 minutes of debate and another 60 seconds for summation. Bryan Schott, The Salt Lake Tribune, 19 Apr. 2022 That was Bam Adebayo’s one-word summation when asked Monday about being snubbed for selection as one of three finalists for 2022 NBA Defensive Player of the Year. Ira Winderman, Sun Sentinel, 18 Apr. 2022 In a rebuttal summation, Assistant U.S. Attorney Danielle Sassoon criticized the defense for saying that multiple victims lied on the witness stand about their experiences. CBS News, 6 Apr. 2022 This article, titled Apple robbed the mob’s bank, lays out a pretty good summation of how the two companies got to this point. Andy Meek, BGR, 5 Apr. 2022 At the annual Redstone Update in December, an FBI official perhaps gave the most succinct summation of all. Paul Gattis |, al, 11 Mar. 2022 This image set baseball Twitter aflame, and this image seemed to be the perfect summation of the fans perception of Rob Manfred. Jules Posner, Forbes, 26 Jan. 2022 See More

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.

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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Dictionary Entries Near summation



summation tone

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Last Updated

3 May 2022

Cite this Entry

“Summation.” Dictionary, Merriam-Webster, Accessed 17 May. 2022.

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More Definitions for summation


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 Encyclopedia article about summation


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