Aggregation may refer to: Business and economics Aggregation problem (economics) Purchasing aggregation, the joining of multiple purchasers in a group purchasing organization to increase their buying power Community Choice Aggregation, the joining of geographically contiguous communities to bypass a conventional energy utility monopoly and seek a greener energy service Computer science and telecommunication Aggregate function, a type of function in data processing Aggregation, a form of object composition in object-oriented programming Link aggregation, using multiple Ethernet network cables/ports in parallel to increase link speed Packet aggregation, joining multiple data packets for transmission as a single unit to increase network efficiency Route aggregation, the process of forming a supernet in computer networking Aggregation, a process by which Australian country television markets were combined in the late 1980s and 1990s; see Regional television in Australia Natural sciences and statistics Aggregation (ethology), any gathering of organisms Aggregation of soil granules to form soil structure Particle aggregation, direct mutual attraction between particles (atoms or molecules) via van der Waals forces or chemical bonding The accumulation of platelets to the site of a wound to form a platelet plug or a thrombus Flocculation, a process where a solute comes out of solution in the form of floc or flakes Overdispersion or statistical aggregation, where the variance of a distribution is higher than which we expect. Aggregation pheromone Protein aggregation, the aggregation of mis-folded proteins Other uses Aggregation (linguistics), a merging of syntactic constituents Aggregation (magazine), a 2010–2012 Canadian online magazine See also Aggregate (disambiguation) Aggregator (disambiguation), a web site or computer software that aggregates syndicated web content Agrégation, in French-speaking countries, higher-level competitive examinations for teachers and professors :Category:Aggregation-based digital libraries, digital libraries that are primarily based on aggregation or harvesting of other digital libraries or repositories Composition (disambiguation)