Word Study
electrode
CIDE DICTIONARY
electrode, n. [Electro- + Gr. "odo`s way, path: cf. F. électrode.].
a conducting object by which electricity is conveyed into or from a solution or other non-metallic conducting medium; esp., the ends of the wires or conductors, leading from source of electricity, and terminating in the medium traversed by the current.
"Electrodes may be specially designed or made of a special material for particular purposes, as for example silver electrodes used in electroplating." [1913 Webster]
OXFORD DICTIONARY
electrode, n. a conductor through which electricity enters or leaves an electrolyte, gas, vacuum, etc.
Etymology
ELECTRIC + Gk hodos way
For further exploring for "electrode" in Webster Dictionary Online