1. Power, force, or strength; the condition or quality of being potent. 2. Specifically, sexual p.. 3. In therapeutics, the relative pharmacologic activity of a dose of a compound compared with the dose of a different agent producing the same effects; e.g., aspirin and acetaminophen are of equal p. in alleviating headache (same dose required), but ketarolac exhibits greater p. than ibuprofen, as 20 mg of the former is as effective as 400 mg of the latter. [L. potentia, power]
- sexual p. the ability to carry out and consummate sexual intercourse, usually referring to the male.

* * *

po·ten·cy 'pōt-ən-sē n, pl -cies the quality or state of being potent: as
a) chemical or medicinal strength or efficacy <a drug's \potency>
b) the ability to copulate usu. used of the male
c) initial inherent capacity for development of a particular kind <cells with a \potency for eye formation>

* * *

po·ten·cy (poґtən-se) [L. potentia power] 1. the ability of the male to perform coitus. 2. the relationship between the therapeutic effect of a drug and the dose necessary to achieve that effect; a drug with a higher potency will require a smaller dose to produce a given effect. Clinically, potency has little use except as a means to compare the relative activities of pharmaceutic agents. Cf. efficacy. 3. the ability of an embryonic part to develop and complete its destiny.

Dose-effect curve for two drugs of different potency: Drug A is more potent than drug B.

Medical dictionary. 2011.


Look at other dictionaries:

  • Potency — may refer to:*Virility *Potency (pharmacology), a measure of the activity of a drug in a biological system *In biology, potency is a measure of the differentiation potential of stem cells *In seismology, the quotient of seismic moment and… …   Wikipedia

  • Potency — 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;… …   The Collaborative International Dictionary of English

  • potency — [pōt′ n sē] n. pl. potencies [L potentia] 1. the state or quality of being potent, or the degree of this; power; strength 2. capacity for development; potentiality: Also, esp. for POTENCY sense 1, potence SYN. STRENGTH …   English World dictionary

  • potency — I noun ability, authoritativeness, authority, brawn, caliber, capability, clout, command, competence, control, effect, effectiveness, efficacy, energy, faculty, force, function, influence, intensity, main force, might, mightiness, muscle,… …   Law dictionary

  • potency — 1530s, from L. potentia power, from potentem potent (see POTENT (Cf. potent)) …   Etymology dictionary

  • potency — [n] effectiveness authority, birr, capability, capacity, command, control, dominion, efficacy, efficiency, energy, force, go*, hardihood, influence, juice*, kick*, might, moxie*, muscle*, pep, potential, power, puissance, punch, sinew*, snap,… …   New thesaurus

  • potency — po|ten|cy [ˈpəutənsi US ˈpou ] n [singular,U] 1.) the power that something has to influence people potency of ▪ the potency of his arguments ▪ The myth of male superiority was losing its potency. 2.) the strength of something, especially a drug,… …   Dictionary of contemporary English

  • potency — [[t]po͟ʊt(ə)nsi[/t]] 1) N UNCOUNT: usu with supp Potency is the power and influence that a person, action, or idea has to affect or change people s lives, feelings, or beliefs. They testify to the extraordinary potency of his personality... All… …   English dictionary

  • potency — UK [ˈpəʊt(ə)nsɪ] / US [ˈpoʊt(ə)nsɪ] noun Word forms potency : singular potency plural potencies 1) [countable] the strength of a medicine, drug, or chemical Improper storage may decrease the potency of the drug. 2) [uncountable] the physical… …   English dictionary

  • potency — noun ADJECTIVE ▪ sexual ▪ a man at the peak of his sexual potency VERB + POTENCY ▪ increase ▪ have ▪ lose …   Collocations dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”