catelectrotonus

from The Century Dictionary.

• noun The changed physical and physiological condition in the neighborhood of the cathode when a constant electrical current is passed through a piece of nerve or muscle. Also cathelectrotonus. See electrotonus.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Physics) The condition of increased irritability of a nerve in the region of the cathode or negative electrode, on the passage of a current of electricity through it.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The condition of increased irritability of a nerve in the region of the cathode or negative electrode when a current is passed through it.