A hard silver-white acid-resistant metallic element that is found in platinum ores and is used to harden platinum and palladium for jewelry and in alloys for nonmagnetic wear-resistant instrument pivots and electrical contacts. Atomic number 44; atomic weight 101.07; melting point 2,334°C; boiling point 4,150°C; specific gravity 12.1 (20°C); valence 0, 1, 2, 3, 4, 5, 6, 7, 8.
A synthetic steroid, C29 H35 NO2 , that blocks the action of progesterone and is used in combination with misoprostol to induce abortion in early pregnancy.
a rare polyvalent metallic element of the platinum group; it is found associated with platinum
Find another word for ru. In this page you can discover 3 synonyms, antonyms, idiomatic expressions, and related words for ru, like: ruthenium, mifepristone and atomic number 44.