ag·​gre·​ga·​tion | \ˌa-gri-ˈgā-shən \

Definition of aggregation 

1 : a group, body, or mass composed of many distinct parts or individuals A galaxy is an aggregation of stars and gas.

2a : the collecting of units or parts into a mass or whole

b : the condition of being so collected

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Other Words from aggregation

aggregational \ -​shnəl , -​shə-​nᵊl \ adjective

Examples of aggregation in a Sentence

Recent Examples on the Web

This was the case with the marketing and data aggregation firm Exactis, which left about 340 million records exposed on a publicly accessible server. Lily Hay Newman, WIRED, "The Worst Cybersecurity Breaches of 2018 So Far," 9 July 2018 Electricity aggregation, which is authorized by Illinois statute, allows municipalities to bundle residential and smaller business accounts, then use competitive bidding to seek lower rates from alternate supplies. Steve Schering,, "Oak Park to seek new electric aggregation bids," 15 June 2018 So either anonymization or aggregation, which effectively also anonymizes things. Nicholas Thompson, WIRED, "How Facebook Wants to Improve the Quality of Your News Feed," 23 May 2018 Researchers have found that, in mice, bacterial proteins could trigger the aggregation of the alpha-synuclein in the gut and the brain. Diana Kwon, Scientific American, "Does Parkinson’s Begin in the Gut?," 8 May 2018 The results of their work, a review of the top 10 basking shark aggregations that were available in decades’ worth of aerial survey records, were recently published in the Journal of Fish Biology. Martin Finucane,, "Why did they meet? 1,400 basking sharks were spotted in area of ocean off Mass. in 2013," 20 Apr. 2018 The owner of China’s most popular news-aggregation app is holding discussions about a multibillion-dollar initial public offering that could take place this year, according to people familiar with the matter. Stella Yifan Xie, WSJ, "Owner of China’s Top News-Aggregation App in IPO Talks," 10 July 2018 In FiveThirtyEight’s aggregation of public opinion polls, Trump in the last year has never sunk below 36.4 percent nor risen above 42.4 percent. Jeet Heer, The New Republic, "Anti-Trumpism Is the Democrats’ Greatest Liability," 3 Apr. 2018 Apple was already showing significant interest in news aggregation back in Mar. 2018 with the acquisition of magazine subscription service Texture -- which, incidentally, is part-owned by Condé Nast, Ostroff’s current employer. Cherie Hu, Billboard, "Aggressive Content Bundling Might Be Spotify's Only Chance of Competing With Apple, Amazon," 10 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aggregation.' 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 aggregation

1547, in the meaning defined at sense 1

History and Etymology for aggregation

Middle English aggreciacioun "process of adding numbers, gathering of pus or humors," borrowed from Late Latin aggregātiōn-, aggregātiō "gathering together," from Latin aggregāre "to cause to flock together, aggregate entry 2" + -tiōn-, -tiō, suffix of action nouns

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Last Updated

27 Oct 2018

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The first known use of aggregation was in 1547

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ag·​gre·​ga·​tion | \ˌa-gri-ˈgā-shən \

Kids Definition of aggregation

1 : the collecting of units or parts into a mass or whole The formation of a blood clot begins with the aggregation of platelets.

2 : a group, body, or mass composed of many distinct parts A galaxy is an aggregation of stars, gas, and dust.


ag·​gre·​ga·​tion | \ˌa-grə-ˈgā-shən \

Legal Definition of aggregation 

1 : the collecting of individual units (as damages) into a whole

2 : a collection of separate parts that is unpatentable because no integrated mechanism or new and useful result is produced — compare combination, equivalent

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