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

Using holographic imaging technology, scientists will also investigate particle aggregation to determine how the lake’s physical dynamics cause particles to clump together and sink, affecting water clarity. —Reeti Malhotra, Sacbee.com, 15 June 2026

Data aggregation tools help eliminate information silos by integrating reporting across multiple providers and systems. —Paul Westall, Forbes.com, 1 June 2026

So far this year, shark aggregations have been popping up in Los Angeles County near Will Rogers State Beach and Santa Barbara, Lowe said. —Laylan Connelly, Oc Register, 30 May 2026

For environmentally conscious residents, competitive retail supply is often the most accessible pathway to purchasing electricity that goes beyond the minimum renewable content requirements set by municipal aggregation programs. —Michael Rombach, Boston Herald, 27 May 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