Electrode

(e-lek' -trod). The instruments, fastened to the conducting cords of a battery, that are used in the application of electricity to the body. The standard sizes of electrodes tun erally adopted in therapy are, according to Erb, as follows: 1. Fine electrode, cm diameter. 2. Small " 2 " 3. Medium " 7.5 " 4. Large " " 5. Very large 8 " E., Brush, one end fitted with a camel's-hair pencil. E., Clay, a therapeutic electrode of clay shaped to tit the part of the body to be treated. E., Electro therapeutic, the therapeutic electrode is generally placed nearer the organ or part to be treated than the indifferent electrode. E., Indifferent, the electrode that is employed merely to complete the circuit; not directly concerned in the treatment or diagnosis. E., Non-polarizable, zinc wires treated and so arranged as to prevent electrolysis. See Anode and Cathode.