anodized

The term originates from the electrochemical process of 'anodizing', which was coined in the early 20th century. It is built upon the word 'anode', the positively charged electrode introduced by scientist William Whewell in 1834 from Greek elements meaning 'the upward way'. The suffix '-ized' indicates the action of subjecting a metal to this process. Thus, 'anodized' literally means 'made into or treated at the anode', describing the result where a metal part, acting as the anode, is electrolytically coated with a protective oxide layer.

Structure: anod (anode) + ized (made into; past participle suffix) - 'anod': A back-formation from 'anode', derived from Greek 'ana-' (up) + 'hodos' (way, path). In this word, it refers to the positive electrode. - 'ized': A suffix of Greek origin via Latin and French, forming adjectives meaning 'made, treated, or characterized by'.