noun, plural potencies for 4–6.
the state or quality of being potent.
power; authority.
efficacy; effectiveness; strength.
capacity to be, become, or develop; potentiality.
a person or thing exerting power or influence.
Mathematics, cardinal number ( def 2 ).
Also, potence.

1530–40; < Latin potentia. See potent1, -ency

overpotency, noun

1. strength, force, energy, capacity, potential.
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World English Dictionary
potency or potence (ˈpəʊtənsɪ)
n , pl -tencies, -tences
1.  the state or quality of being potent
2.  latent or inherent capacity for growth or development
[C16: from Latin potentia power, from posse to be able]
potence or potence
[C16: from Latin potentia power, from posse to be able]

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American Heritage
Medical Dictionary

potency po·ten·cy (pōt'n-sē)

  1. The quality or condition of being potent.

  2. The pharmacological activity of a compound.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Conversely, some antacids increase the potency of certain drugs.
Such is the fabulous potency of the idea of the book.
All known pit vipers are venomous, although their potency varies across species.
Because the potency is so low in the supplements that it has no effect.
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