Electrotonic a. : 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.

Electrotonic a. : Relating to electrotonus; as, the electrotonic condition of a nerve.

Example:


Taxonomy
neurons, action potentials, free encyclopedia, the action, passive, membrane, spreads, ionic conductance, trigger, influx, search, Unsourced, physiology, electrotonus, voltage-dependent, dependent changes, excitable cells, electrical potential.

Defination from the web:
Electrotonic potentials represent changes to the neuron's membrane potential that do not lead to the generation of new current by action ... Because the ionic charge enters in one location and dissipates to others, losing intensity as it spreads, electrotonic spread is a graded response. ...