水銀; 汞
Hydrargyrum \Hy*drar"gy*rum\, n. [NL., fr. L. hydrargyrus, Gr. ?; ? water + ? silver.] (Chem.) Quicksilver; mercury.
hydrargyrum n : a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures [syn: {mercury}, {quicksilver}, {Hg}, {atomic number 80}]