aggregation

American  

[ag-ri-gey-shuhn] / ˌæg rɪˈgeɪ ʃən /

noun

1. a group or mass of distinct or varied things, persons, etc..

   an aggregation of complainants.

2. collection into an unorganized whole.

3. the state of being so collected.

4. Biology, Ecology. a group of organisms of the same or different species living closely together but less integrated than a society.

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Other Word Forms

• aggregational adjective
• reaggregation noun
• subaggregation noun

Etymology

Origin of aggregation

First recorded in 1540–50; from Medieval Latin aggregātiōn-, stem of aggregātiō “a flocking together, gathering”; aggregate, -ion

Example Sentences

Spreads for an aggregation of 10 year investment grade U.S. bonds have risen to 0.86% from a 2026 low of 0.73% in late January, according to St. Louis Fed data.

From Barron's • Mar. 3, 2026

So far, The Bone Temple has received positive reviews, achieving 94% on film reviews aggregation site Rotten Tomatoes.

From BBC • Jan. 16, 2026

Low-dose naltrexone has been shown to reduce fatigue and lower platelet aggregation.

From Science Daily • Jan. 8, 2026

Matador Ranch and Cattle, which was formed from the aggregation of Beaverhead and a smaller ranch purchased by Murdoch in 2021, declined to comment for this story.

From Salon • Dec. 4, 2025

This is interesting, since a city is the most concentrated aggregation of humans, all exerting whatever influence they can bring to bear.

From "The Lives of a Cell" by Lewis Thomas