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catalysis collapse: acceleration of a chemical reaction induced 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"

catalyst collapse: something that causes an important event to happen; "the invasion acted as a catalyst to unite the country"; (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected

dissociation collapse: the act of removing from association; (chemistry) the temporary or reversible process in which a molecule or ion is broken down into smaller molecules or ions; a state in which some integrated part of a person's life becomes separated from the rest of the personality and functions independently

fission collapse: a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy; reproduction of some unicellular organisms by division of the cell into two more or less equal parts

decay collapse: the organic phenomenon of rotting; a gradual decrease; as of stored charge or current; the process of gradually becoming inferior; the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation; an inferior state resulting from the process of decaying; "the corpse was in an advanced state of decay"; "the house had fallen into a serious state of decay and disrepair"; fall into decay or ruin; "The unoccupied house started to decay"; undergo decay or decomposition; "The body started to decay and needed to be cremated"

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