English

heptacopper

From hepta- + copper.

Proto-Indo-European *septḿ̥ ‘seven’

Proto-Hellenic *heptə́ ‘seven’

Ancient Greek ἑπτά ‘seven’

Ancient Greek Κῠ́προς ‘Cyprus’

Latin aes Cyprium

Late Latin cuprum

Old English coper

Middle English coper ‘copper ore’

Today it means

noun Seven atoms of copper in a chemical compound.

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

Etymograph / heptacopper