Synergism 5 : The cooperative action of separate substances so that the total effect is greater than the sum of the effects of the substances acting independently. See Synergism in Section 1. (Bul D11)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}