synergism

[sin-er-jiz-uh m, si-nur-jiz-] /ˈsɪn ərˌdʒɪz əm, sɪˈnɜr dʒɪz-/
noun
1.
synergy (def 1).
2.
Biochemistry, Pharmacology. the joint action of agents, as drugs, that when taken together increase each other's effectiveness (contrasted with antagonism).
3.
Theology. the doctrine that the human will cooperates with the Holy Ghost in the work of regeneration.
Compare monergism.
Origin
1755-65; < Neo-Latin synergismus < Greek synerg(ós) ‘working together’ (syn- syn- + érg(on) work + -os adj. suffix) + Neo-Latin -ismus -ism
British Dictionary definitions for synergism

synergism

/ˈsɪnəˌdʒɪzəm; sɪˈnɜː-/
noun
1.
Also called synergy. the working together of two or more drugs, muscles, etc, to produce an effect greater than the sum of their individual effects
2.
another name for synergy (sense 1)
3.
(Christian theol) the doctrine or belief that the human will cooperates with the Holy Spirit and with divine grace, esp in the act of conversion or regeneration
Word Origin
C18: from New Latin synergismus, from Greek sunergos, from syn- + ergon work
Word Origin and History for synergism
n.

1650s, "theological doctrine that human will cooperates with divine grace in regeneration," from Modern Latin synergismus, from Greek synergos "working together" (see synergy). Used in a broader (non-theological) sense by 1925.

synergism in Medicine

synergism syn·er·gism (sĭn'ər-jĭz'əm)
n.
Synergy.