• (n.) The modified condition of a nerve, when a constant current of electricity passes through any part of it. See Anelectrotonus, and Catelectrotonus.
change in excitability that follows the application of a subthreshold stimulating current
(e-lek-trot´ә-nәs) the altered electrical state of an excitable cell when a constant electric current is passed through it; for example, the changes in membrane potential of excitable cells that cause a passive change in potential at every other point on the cell membrane.
E`lec·trot'o·nus noun [ New Latin , from combining form electro- + Greek ... tension.] (Physiol.) The modified condition of a nerve, when a constant current of electricity passes through any part of it. See Anelectrotonus , and Catelectrotonus . 
Type: Term Pronunciation: ē-lek-trot′ŏ-nŭs Definitions: 1. Changes in excitability and conductivity in a nerve or muscle cell caused by the passage of a constant electric current. Synonyms: galvanotonus1
the altered state of a nerve during the passage of an electric current through it.