Where does “alt-metal” come from?

alt-metal (English) comes from English metal, from French métal, from German metall, from Italian metallo, from Spanish metal, from Old Spanish metal, from Old French métal, from Latin metallum — to mine, quarry.

Ancestry of “alt-metal”, step by step

StepLanguageWordMeaning
1Englishmetal"Chemical elements or alloys, and the mines where...
2Frenchmétalmetal
3Germanmetallmetal
4Italianmetallometal
5Spanishmetalmetal
6Old Spanishmetalmetal
7Old Frenchmétalmetal material
8Latinmetallummetal; precious metals, especially gold or...
9Ancient GreekμέταλλονA mine, quarry, or salt pit; metal
10Ancient Greekμέταλλευεινto mine, quarry
Every word from Ancient Greek μέταλλευεινEvery word from Ancient Greek μέταλλονEvery word from Latin metallum