rhodium
UK[ˈrəʊdiəm]US[ˈroʊdiəm]
n
a hard, silvery-white metallic element that is very resistant to corrosion and is used in alloys and as a catalyst.
Etymology
the element rhodium was discovered in 1803 by english chemist william hyde wollaston. he named it after the greek word 'rhodon', meaning 'rose', due to the rose-red color of one of its chlorine compounds. the naming follows the convention of using the '-ium' suffix for metallic elements, established with earlier discoveries like potassium and sodium. thus, the name 'rhodium' poetically links the element's chemical properties to the color of a rose.
Analysis
the word is a modern scientific coinage based on the greek root 'rhodon' (rose). the suffix '-ium' is used to denote a metallic element.
Examples
rhodium is often alloyed with platinum for use in catalytic converters.
the high reflectivity of rhodium makes it valuable for coating jewelry and optical instruments.
due to its rarity and resistance to tarnish, rhodium commands a high market price.