1. (n.) Dissolution; degeneration; decay.

2. (n.) A process by which reaction occurs in the presence of certain agents which were formerly believed to exert an influence by mere contact. It is now believed that such reactions are attended with the formation of an intermediate compound or compounds, so that by alternate composition and decomposition the agent is apparently left unchanged; as, the catalysis of making ether from alcohol by means of sulphuric acid; or catalysis in the action of soluble ferments (as diastase, or ptyalin) on starch.

3. (n.) The catalytic force.

acetification acidification acidulation alkalization avatar carbonation catabolism catalyst chemicalization consubstantiation decay dialysis displacement dissociation electrolysis ferment fermentation fission heterotopia hydrogenation hydrolysis hydrolyst isomerism metabolism metagenesis metamerism metamerization metamorphism metamorphosis metastasis metathesis metempsychosis mutant mutated form mutation nitration oxidation oxidization permutation phosphatization photolysis polymerism polymerization position isomerism reduction reincarnation saturization splitting sport thermolysis transanimation transfiguration transfigurement transformation transformism translation translocation transmigration transmogrification transmutation transposition transubstantiation working