1. the formation of a number of things into a cluster: "a single dose of aspirin irreversibly inhibits the normal aggregation of platelets"
▪ a cluster of things that have come or been brought together: "the pelican is the other bird likely to be found in large aggregations in East Africa's wetlands"
▪ (on the internet) the collection of related items of content so that they can be displayed or linked to:"a desktop aggregation app that brings together Facebook, Twitter, and LinkedIn"