electrotonic
/ɪˌlɛktrə(ʊ)ˈtɒnɪk/adjective
1 Electricity. Designating a modified state of an electrical conductor when subjected to a magnetic field. Now historical.
2 Physiology. Of, relating to, or characterized by electrotonus.
Origin
Mid 19th century; earliest use found in Michael Faraday (1791–1867), natural philosopher, scientific adviser, and Sandemanian. From electro- + tonic.