D defs.my
Entry 2 senses Webster, 1913

Synergist

· Syn·er·gist · IPA
01 n. One who holds the doctrine of synergism.
  1. 1.
    One who holds the doctrine of synergism.
  2. 2.
    A remedy which has an action similar to that of another remedy, and hence increases the efficiency of that remedy when combined with it.(Med.)