English

heptaluminium

From hepta- + aluminium.

Proto-Indo-European *septḿ̥ ‘seven’

Proto-Hellenic *heptə́ ‘seven’

Ancient Greek ἑπτά ‘seven’

Proto-Indo-European *h₂elut- ‘beer’

Latin alūmen ‘alum’

Today it means

noun Seven atoms of aluminium in a chemical compound. Al₇

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

Etymograph / heptaluminium