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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site cathode The negative pole, or electrode, of an electrolytic cell, vacuum tube, etc., where electrons enter (current leaves) the system. Compare with anode. Related category    • BATTERIES Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP