Catalysis, nanoparticles: hydrogen peroxidePhoto courtesy of Dr. David J. Willock, Cardiff Universityin chemistry, the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during the reaction.
The United Service Organizations Inc. (USO Show) is a nonprofit organization that provides programs, services and live entertainment to United States service members and their families.
uso. 1  a relative of the same generation and gender. 2  pith (the soft, spongy substance in the center of the stems of many plants and trees) 3  root of the kava plant, Piper methysticum.