a hard, gray-white metallic chemical element, one of the platinum metals, used in alloys with platinum and gold in thermocouples and as an electrical contact material, and in unalloyed form to electroplate optical instruments, silverware, jewelry, etc.: symbol, Rh; at. no. 45
Origin of rhodiumModL: so named (1804) by its discoverer, W. H. Wollaston (see wollastonite) ; from Classical Greek rhodon, rose (see Rhoda), after the color of a dilute solution of its salts + -ium
A hard, durable, silvery-white metallic element that is used to form high-temperature alloys with platinum and is plated on other metals to produce a durable corrosion-resistant coating. Atomic number 45; atomic weight 102.905; melting point 1,964°C; boiling point 3,695°C; specific gravity 12.41 (20°C); valence 2, 3, 4, 5, 6. See Periodic Table.
Origin of rhodiumGreek rhodo-, rhodo- + –ium.
- A metallic chemical element (symbol Rh) with an atomic number of 45.
From Ancient Greek á¿¥ÏŒÎ´Î¿Î½ (rhodon, “rose"), because of the colour of its salts' solutions.