aggregation

noun

ag·​gre·​ga·​tion ˌa-gri-ˈgā-shən 

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 

adjective

Examples of aggregation in a Sentence

Recent Examples on the Web

In an increasingly competitive streaming market, platforms are seeing the benefits of aggregation, creating business models that look a lot like old school cable bundling. —Scott Roxborough, HollywoodReporter, 8 Jan. 2026

With Kranz and corresponding author William Klein (an Alzheimer’s disease expert and a professor of neurobiology at Weinberg), Silverman and colleagues worked for years to find or create a small molecule to prevent the aggregation of neurodegenerative proteins. —New Atlas, 7 Jan. 2026

San Diego Community Power is a community choice aggregation program that serves 957,000 customer accounts for the cities of San Diego, Chula Vista, La Mesa, Encinitas, Imperial Beach and National City, plus unincorporated areas of San Diego County. —Rob Nikolewski, San Diego Union-Tribune, 29 Dec. 2025

But there is value in resisting pure optimization, aggregation, and specialization. —Jay Caspian Kang, New Yorker, 9 Dec. 2025

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

Phrases Containing aggregation

• sign of aggregation

Rhymes for aggregation

• abdication
• aberration
• abjuration
• abnegation
• abrogation
• acceptation
• acclamation
• acclimation
• accusation
• activation
• actuation
• acylation

Kids Definition

aggregation

noun

ag·​gre·​ga·​tion ˌag-ri-ˈgā-shən 

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 

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