I. ˈsinərˌjizəm noun
( -s )
Etymology: New Latin synergismus, from Greek synergos working together + Latin -ismus -ism
1. : an ancient theological doctrine holding that in regeneration there is cooperation of divine grace and human activity
this form of synergism is technically known as semi-Pelagianism, but it is much older than the semi-Pelagians, being essentially the view of the Church, both east and west, ever since Irenaeus — A.C.McGiffert
— compare monergism
2. : cooperative action of discrete agencies (as drugs or muscles) such that the total effect is greater than the sum of the two or more effects taken independently — opposed to antagonism
II. noun
: interaction of discrete agents, elements, or constituents in such a way that the total effect is greater than the sum of the individual effects