synergism (n.)youdaoicibaDictYouDict[synergism 词源字典]
1650s, "theological doctrine that human will cooperates with divine grace in regeneration" (implying that the fall did not cost the soul all inclination toward holiness), from Modern Latin synergismus, from Greek synergos "working together" (see synergy). Used in non-theological sense "a working together, cooperation" by 1910 (first of medicines).[synergism etymology, synergism origin, 英语词源]