anode (n.)

1834, coined from Greek anodos "way upward," from ano "upward," from ana "up" (see ana-) + hodos "a way," a word of uncertain origin. Proposed by the Rev. William Whewell, English polymath, and published by English chemist and physicist Michael Faraday. So called from the path the electrical current was thought to take. Compare cathode. Related: Anodic, anodal.