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

The book tracked the aggregation of executive power from the founding onward, which accelerated during World War II and the Cold War. — Jake Lundberg, The Atlantic, 13 Aug. 2026

Granted, while the score could rise or fall in the coming days as audiences continue to rate the film on the review aggregation site, the 91% audience score matches the best of the four seasons of Reacher and is far higher than the last two seasons. — Tim Lammers, Forbes.com, 12 Aug. 2026

Aside from its costly – and risky — production and distribution business, Belmer has increasingly looked to reposition TF1 around streaming and aggregation. — Elsa Keslassy, Variety, 3 Aug. 2026

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

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