Catalyst: A material that can cause a chemical reaction of other substances, without being a part of that reaction. Examples in the engine catalytic converter are platinum, palladium. etc. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostCarburettor Next PostCatalytic converter