r 1 a 1 d 2 i 1 u 1 m 3
6 letters · 9 points in Scrabble
Meaning
noun an intensely radioactive metallic element that occurs in minute amounts in uranium ores
originBorrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements).
Etymology from Wiktionary, CC BY-SA 3.0