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syn·er·gis·tic .sin-ər-'jis-tik adj
1) having the capacity to act in synergism <\synergistic drugs> <\synergistic muscles>
2) of, relating to, or resembling synergism <a \synergistic reaction> <a \synergistic effect>
syn·er·gis·ti·cal·ly -ti-k(ə-)lē adv
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syn·er·gis·tic (sin″ər-jisґtik) 1. acting together. 2. enhancing the effect of another force or agent.Medical dictionary. 2011.