a rare, metallic chemical element that is a silver-white solid or a gray-to-black powder, used in thermocouples, electrodes, etc.: symbol, Re; at. no. 75
Origin of rheniumModern Latin ; from Classical Latin Rhenus, Rhine + -ium: so named (1925) by its discoverers W. Noddack (1893-1960), I. Tacke, and amp; O. Berg, German chemists
A rare, dense, silvery-white metallic element with a very high melting point, extracted chiefly from molybdenite and used for electrical contacts, with tungsten for high-temperature thermocouples, and as a catalyst for refining hydrocarbon fuels. Atomic number 75; atomic weight 186.2; melting point 3,185°C; boiling point 5,596°C; specific gravity 20.8 (20°C); valence 1, 2, 3, 4, 5, 6, 7. See Periodic Table.
Origin of rheniumFrom Latin Rh&emacron;nus, the Rhine.
- A metallic chemical element (symbol Re) with an atomic number of 75.
From Latin Rhenus (“Rhine").