Synonyms:
radium, Ra, atomic_number_88
Meaning: an intensely radioactive metallic element that occurs in minute amounts in uranium ores
Usage examples
The fourth place was given to Radium, the fifth to Antiseptics and Antitoxines, the sixth to Spectrum Analysis, and the seventh to the marvelous X-Ray.
I'm no good at all on metals--I couldn't feel gold if I were perched right on the roof of Fort Knox; I couldn't feel radium if it were frying me to a crisp.