aggregation

noun

ag·​gre·​ga·​tion ˌa-gri-ˈgā-shən How to pronounce aggregation (audio)
Synonyms of aggregationnext
1
: a group, body, or mass composed of many distinct parts or individuals
A galaxy is an aggregation of stars and gas.
2
a
: the collecting of units or parts into a mass or whole
b
: the condition of being so collected
aggregational
ˌa-gri-ˈgā-sh(ə-)nəl How to pronounce aggregation (audio)
adjective

Examples of aggregation in a Sentence

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.
Foldamers could open new treatment avenues not only for Parkinson’s disease, but also for other neurodegenerative disorders driven by toxic protein aggregation, including Alzheimer’s disease and ALS. — Sunil Kumar, The Conversation, 31 July 2026 If the first stage of the streaming wars was media companies launching their own services, and the second was about getting them to profitability, the third iteration of this battle is poised to be about aggregation. — Alex Sherman, CNBC, 30 July 2026 These sites often concentrate both wildlife and tourism, bringing together dense aggregations of animals and people in the same space. — Melissa Cristina Márquez, Forbes.com, 28 July 2026 Conchs are slow-moving and must find a mate to reproduce, making dense breeding aggregations especially important for their continued survival. — Ashley Miznazi, Miami Herald, 27 July 2026 See All Example Sentences for aggregation

Word History

Etymology

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

First Known Use

1547, in the meaning defined at sense 1

Time Traveler
The first known use of aggregation was in 1547

Phrases Containing aggregation

Rhymes for aggregation

See All Rhymes for aggregation

Browse Nearby Words

aggregate ray
aggregation
aggregative
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Cite this Entry

“Aggregation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aggregation. Accessed 5 Aug. 2026.

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Kids Definition

aggregation

noun
ag·​gre·​ga·​tion ˌag-ri-ˈgā-shən How to pronounce aggregation (audio)
1
: the collecting of units or parts into a mass or whole
2
: a group, body, or mass composed of many distinct parts

Legal Definition

aggregation

noun
ag·​gre·​ga·​tion ˌa-grə-ˈgā-shən How to pronounce aggregation (audio)
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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