rhodium C2 Topic:Materials & Substances US /ˈɹoʊ.di.əm/ UK /ˈrəʊ.di.əm/ See IPA manual Freq #124479 Meanings 1 noun the rare, hard, silvery-white chemical element with symbol Rh and atomic number 45, belonging to the platinum group Rhodium is used in catalytic converters because it helps reduce nitrogen oxides in exhaust gases. Thesaurus Word family Derived forms rhodic Related forms palladiumplatinumplatinum-group metal Etymology Borrowed from New Latin rhodium, formed from Greek rhodon ("rose"). William Hyde Wollaston named the element in 1804 for the rose-red color of solutions of some of its salts. Topics Materials & Substances Register & Style External links Google Images Cambridge Dictionary Wiktionary # rhodium **Type:** Word **Level:** C2 **Part of speech:** noun **IPA (US):** /ˈɹoʊ.di.əm/ **IPA (UK):** /ˈrəʊ.di.əm/ **Frequency rank:** 124479 ## Meanings 1. the rare, hard, silvery-white chemical element with symbol Rh and atomic number 45, belonging to the platinum group ## Examples - Rhodium is used in catalytic converters because it helps reduce nitrogen oxides in exhaust gases. ## Derived Forms - rhodic ## Related Forms - palladium - platinum - platinum-group metal ## Etymology Borrowed from New Latin rhodium, formed from Greek rhodon ("rose"). William Hyde Wollaston named the element in 1804 for the rose-red color of solutions of some of its salts. ## Topics - Materials & Substances - Register & Style markdown