Po"ten*cy (?), n. [L. potentia, from potens, -entis, potent. See Potent, and cf. Potance, Potence, Puissance.]
The quality or state of being potent; physical or moral power; inherent strength; energy; ability to effect a purpose; capability; efficacy; influence.
"Drugs of potency
A place of potency and away o' the state.
© Webster 1913.