|älə̇gō, ə|ligə+(ˌ) ̷ ̷| ̷ ̷ ̷ ̷ adjective
Etymology: International Scientific Vocabulary olig- + dynamic; originally formed as German oligodynamisch
1. : active in very small quantities
an oligodynamic germicide
2.
a. : produced by very small quantities
oligodynamic action of finely divided silver in disinfecting water
b. : of or relating to the action of such quantities
3. : of, relating to, or being produced by the specific activity of an oligodynamic substance
the oligodynamic action of some pyridine derivatives on pathogenic microorganisms