synergy synergy /ˈsɪnɝdʒi/

noun

1. The working together of two things (muscles or drugs for example) to produce an effect greater than the sum of their individual effects  ( synergy , synergism )
   the working together of two things (muscles or drugs for example) to produce an effect greater than the sum of their individual effects
     The combined effect of the two drugs showed synergism, enhancing their therapeutic action.
   The combined effect of the two drugs showed synergism, enhancing their therapeutic action.