From Italian 'duomo' (cathedral), from Latin 'domus' (house) — meaning shifted from 'house of God' to its distinctive roof.
A rounded vault forming the roof of a building or structure; any dome-shaped thing.
From French 'dome,' from Italian 'duomo' (cathedral), from Latin 'domus' (house, home), from PIE *dem- meaning 'to build, house, household.' This root is one of the most ancient domestic terms in Indo-European, generating Greek 'domos' (house, room), Sanskrit 'dama' (house), Old Slavic 'domu' (house), and Old English 'timber' (building material). In Latin, 'domus' referred to any private house, and by extension the household as a social unit