metallurgy n.

an undecomposable elementary substance having certain recognizable qualities (opacity, conductivity, plasticity, high specific gravity, etc.), mid-13c., from Old French metal "metal; material, substance, stuff" (12c.), from Latin metallum "metal, mineral; mine, quarry," from Greek metallon "metal, ore" (senses found only in post-classical texts, via the notion of "what is got by mining"); originally "mine, quarry-pit," probably a back-formation from metalleuein "to mine, to quarry," a word of unknown origin. Perhaps related somehow to metallan "to seek after," but Beekes finds this "hardly convincing."

The concept was based on the metals known from antiquity: gold, silver, copper, iron, lead, and tin. As an adjective, "of or covered with metal," from late 14c. As short for heavy metal (rock music) by 1980. Metal-work "work, especially artistic work, in metal" is by 1724.

Proto-Indo-European root meaning "to do."

It forms all or part of: allergic; allergy; argon; boulevard; bulwark; cholinergic; demiurge; dramaturge; energy; erg (n.1) "unit of energy;" ergative; ergonomics; ergophobia; George; georgic; handiwork; irk; lethargic; lethargy; liturgy; metallurgy; organ; organelle; organic; organism; organize; orgy; surgeon; surgery; synergism; synergy; thaumaturge; work; wright; wrought; zymurgy.

It is the hypothetical source of/evidence for its existence is provided by: Greek ergon "work," orgia "religious performances;" Armenian gorc "work;" Avestan vareza "work, activity;" Gothic waurkjan, Old English wyrcan "to work," Old English weorc "deed, action, something done;" Old Norse yrka "work, take effect."