Latin aēneus, aēnus "made of bronze (or another alloy of copper)" (from aer-, aes "bronze, brass, copper" + -nus, -n-eus, suffixes of materials) + -o- + -lithic — more at ore entry 1
1886, in the meaning defined above
“Aeneolithic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Aeneolithic. Accessed 27 Sep. 2023.
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