{*JohnDoe* (Thursday, April 01, 2004, 16:04):
CATALYST

A substance that changes the rate of a chemical reaction without itself undergoing permanent change in composition or becoming a part of the molecular structure of the product. A catalyst markedly speeds up the cure of a compound when added in minor quantity as compared to the amounts of primary reactants. See, Methyl_Ethyl_Ketone_Peroxide

}