| 释义 |
va·na·di·um
\vəˈnādēəm\ noun
(-s)
Etymology: New Latin, from Old Norse Vanadīs (Freya, Scandinavian goddess) + New Latin -ium
: a gray or white malleable ductile polyvalent metallic element that is resistant to air, seawater, alkalies, and reducing acids except hydrofluoric acid, that occurs widely but for the most part in small amounts in combination in minerals (as vanadinite, patronite, carnotite, roscoelite), in the ashes of many plants, in coals, petroleums, and asphalts, and in the blood of tunicates and other marine animals, that is usually obtained in the form of ferrovanadium or other alloys or in almost pure metallic form containing small amounts of oxygen, carbon, or nitrogen by reduction of ores, slags, or vanadium pentoxide, and that is used chiefly as a constituent of vanadium steel — symbol V; see element table |