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.
NRO may stand for: 1  National Reconciliation Ordinance, a Pakistani law granting amnesties for crimes by politicians etc. 2  National Reconnaissance Office, maintains United States reconnaissance. 3  National Repertory Orchestra, based in Colorado, USA. 4  National Review Online, web version of the magazine National Review.