efficaciousness

English

Etymology

From efficacious +‎ -ness.

Noun

efficaciousness (uncountable)

  1. Quality of being efficacious.
    • 1961, Harry E. Wedeck, Dictionary of Aphrodisiacs, New York: The Citadel Press, page 216:
      In ancient mythology, the efficaciousness of the satyrion is attested, particularly in the case of Hercules.
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