potential difference
noun
: the difference in potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other
Word History
First Known Use
1892, in the meaning defined above
Medical Definition
potential difference
noun
potential dif·fer·ence -ˈdif-(ə-)rən(t)s 
: the difference in electrical potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other compare action potential, generator potential, membrane potential, resting potential