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Noun: catalysis (catalyses)  ku'ta-li-sis
  1. Acceleration of a chemical reaction induced by the presence of material that is chemically unchanged at the end of the reaction
    "of the top 50 commodity chemicals, 30 are created directly by catalysis and another 6 are made from raw materials that are catalytically produced";
    - contact action

Type of: chemical action, chemical change, chemical process

Encyclopedia: Catalysis