Definitions
Radioactive metallic element once used in luminous paint.
Word origin
Borrowed from French radium, from rad(ioactif) (“radioactive”) + -ium (suffix used to form the names of metallic elements).
Used in a sentence
“The U.S. radium dial painters of the 1920s comprised an early cohort of several thousand workers at increased risk of developing radiation induced cancers.”
“City retailers are doing well with high-class radiums printed in bright greens, brilliant purples and strong yellows. Such are the high novelties.”
“Radium satins will also be used extensively in the spring season.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Glow-paint element”6 letters
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