bismuth

bismuth
[ˈbɪzməθ]
noun

[mass noun]the chemical element of atomic number 83, a brittle reddish-tinged grey metal(Symbol: Bi)
（化学元素）铋(符号 Bi)
■a compound of this element used medicinally
铋化物
Bismuth is usually obtained as a by-product from the smelting of tin, lead, or copper. For a metal bismuth has low thermal and electrical conductivity. Its main use is in specialized low melting point alloys; some bismuth compounds have been used medicinally

语源

mid 17th cent.: from modern Latin bisemutum, Latinization of German Wismut, of unknown origin