I. noun 1. the positively charged electrode by which the electrons leave an electrical device.The opposite of cathode. 2. the negatively charged electrode of an electrical device, such as a primary cell, that supplies current. II. derivatives 1. anodal adjective
2. anodic /aˈnɒdɪk / adjective
– origin mid 19th cent.: from Greek anodos ‘way up’, from ana ‘up’ + hodos ‘way’.