• Link aggregation, using multiple Ethernet network cables/ports in parallel to increase link speed
• Particle aggregation, direct mutual attraction between particles (atoms or molecules) via van der Waals forces or chemical bonding
• Route aggregation, in computer networking
• Aggregation of soil granules to form soil structure
• Aggregation, a form of object composition in object-oriented programming
• 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

See also

• Aggregate (disambiguation)
• Aggregator, software for aggregating syndicated web content
• Agrégation, in French-speaking countries, higher-level competitive examinations for teachers and professors