English

electropolish

From electro- + polish.

Ancient Greek ἤλεκτρον ‘amber’

French electrum

French électro-

Proto-Indo-European *pelh₂- ‘to drive, strike, thrust’

Latin polīre ‘to polish, make smooth’

Middle English polishen

Today it means

verb To brighten (a metal) by the electrolytic removal of its surface.

Language periods are conventional ranges, not dates for this word.

Etymograph / electropolish