potency /pō″tənsē/ [L, potentia, power] , 1. (in embryology) the range of developmental possibilities of which an embryonic cell or part is capable, regardless of whether the stimulus for growth or differentiation is natural, artificial, or experimental. See also competence, def. 1. 2. a measure of the strength of the active chemical components contained in an herb or herbal preparation. Standardized products ensure the consumer of receiving a dosage containing a consistent potency. Compare concentration.
