Definition of aggregation in US English:



  • 1The formation of a number of things into a cluster.

    ‘a single dose of aspirin irreversibly inhibits the normal aggregation of platelets’
    • ‘As it is sensitive to geometric shape, this is an appropriate technique for studying aggregation that occurs in solution.’
    • ‘The frequency of the bands would indicate the presence of strong intermolecular interactions, in contrast to the presence of aggregation.’
    • ‘The aggregation of proteins has important technical implications in disease treatment and biotechnology.’
    • ‘Denser aggregations of lymphatic tissue occur as isolated nodules.’
    • ‘This growth is suggestive of a cooperative effect, such as one involving lipid aggregation, possibly due to interaction with negatively charged lipids.’
    • ‘These sections deal with microscopic models related to protein misfolding, aggregation, and fissioning.’
    • ‘These lymphocytes are located in the nodules of the spleen, lymph nodes, and lymphatic aggregations of the ileum.’
    • ‘Assuming aggregation happens on the cell surface, we choose a two-dimensional hexagonal lattice.’
    • ‘The mechanism by which the protein aggregation may cause a brain disorder is not fully understood.’
    • ‘These substances activate white blood cells, increase platelet activation and aggregation, and cause vasoconstriction.’
    1. 1.1 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’
      • ‘Two generations emerged in late spring and midsummer, with the largest aggregation of wasps occurring in late June.’
      • ‘During their resting hours from sunset to sunrise, they gather in closely knit aggregations in caves, under ledges, or in other protected areas.’
      • ‘When spawning, wrasses gather in loose aggregations where one dominant male oversees many females within a general territory.’
      • ‘We re-formed as a kind of ragtag, free-jazz rock aggregation.’
      • ‘They are usually found in small herds or bands during the summer, but in larger aggregations of up to around 100 individuals in the winter.’
      • ‘This aggregation of writers wrote one-act dramas.’
      • ‘Japanese beetles release a strong aggregation pheromone that attracts additional beetles to a potential food source.’
      • ‘Social aggregations have been studied in a variety of animals.’
      • ‘They are most commonly seen as solitary individuals, but on occasion they appear in sizable aggregations, frequently near floating kelp.’
      • ‘Oftentimes, angelfish are seen in small aggregations, where there will be one large dominant individual.’
    2. 1.2 (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’
      • ‘This is a complete electronic aggregation of purchase, educational, recreational, and medical information in a set of huge personal databases.’
      • ‘"We see a lot of companies creating internal Weblogs," says the creator of this aggregation software.’
      • ‘They continue to build potential for broader network aggregation.’
      • ‘As aggregation capabilities accelerate, real-time usage of deep personal data sources will force organizations to redirect their strategies and attention.’
      • ‘Aggregation power arises when one can consolidate information.’
      • ‘Stage three brings to every consumer both total aggregation and total customization possibilities available on demand anywhere anytime.’
      • ‘This application combines all available power for aggregation and personalization in the hands of the consumer and their data communities.’
      • ‘Stages one and two begin to demonstrate the aggregation and personalizing powers of the Web.’
      • ‘This program facilitates the company that owns the download to have Internet access for the aggregation of content.’
      • ‘The aggregation of materials in a digital library can be greater than the sum of its parts.’