Etymograph

English

tridecacopper

From trideca- + copper.

Formed from trideca- + copper

Proto-Indo-European *déḱm̥ ‘ten’

Proto-Hellenic *dékə ‘ten’

Ancient Greek δέκᾰ ‘ten’

Ancient Greek δεκάς ‘the number ten’

Late Latin decas

English trideca-

Ancient Greek Κῠ́προς ‘Cyprus’

Latin aes Cyprium

Late Latin cuprum

Old English coper

Middle English coper ‘copper ore’

English copper

Today it means

noun Thirteen atoms of copper in a chemical compound (Cu₁₃).

Sources

Sources: Wiktionary, “tridecacopper”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / tridecacopper

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