Aeneolithic

adjective

Ae·​ne·​o·​lith·​ic ā-ˌē-nē-ō-ˈli-thik 

: of or relating to a transitional period between the Neolithic and Bronze ages in which some copper was used

Word History

Etymology

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

First Known Use

1886, in the meaning defined above