*electrotonic*

a. 1. (Physics) Of or pertaining to electrical tension; -- said of a supposed peculiar condition of a conducting circuit during its exposure to the action of another conducting circuit traversed by a uniform electric current when both circuits remain stationary. Faraday. [ 1913 Webster ]

2. (Physiol.) Relating to electrotonus; as, the electrotonic condition of a nerve. [ 1913 Webster ]