oligodynamic

oligodynamic
Active in very small quantity; e.g., the germicidal effect of an exceedingly dilute solution (such as one to one hundred million) of copper in distilled water. [oligo- + G. dynamis, power]

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oli·go·dy·nam·ic -dī-'nam-ik adj
1) active in very small quantities <an \oligodynamic germicide>
2 a) produced by minute quantities <\oligodynamic action of 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 <\oligodynamic effects of metals on bacterial growth>

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ol·i·go·dy·nam·ic (ol″ĭ-go-di-namґik) [oligo- + dynamic] active in very minute quantities; said especially of heavy metal ions (Hg2+, Ag+) to describe toxic effect on cells and organisms.

Medical dictionary. 2011.

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