Meaning & Definition
noun
A highly radioactive element with the symbol Ra and atomic number 88, found in trace amounts in uranium and thorium ores and used in medical applications and radiation therapy.
Radium was once used in paint for watch dials due to its glow-in-the-dark properties.
A rare earth metal known for its radioactive properties, particularly as an alpha-emitter.
The discovery of radium led to new advancements in the field of radiation therapy for cancer treatment.
Historically, radium was utilized in various consumer products before the dangers of its radioactivity became known.
After the harmful effects of radium exposure were recognized, many radium-based products were banned.
Etymology
The name 'radium' comes from the Latin word 'radius', meaning 'ray', reflecting its radioactivity.
Common Phrases and Expressions
radium girls:
Refers to female factory workers who were exposed to radium in the early 20th century and suffered severe health effects.
radium therapy:
A medical treatment using radium for cancer patients.
Slang Meanings
Glow-in-the-dark
That paint glows like it has radium in it!
Dangerous yet fascinating
Those old radium toys are creepy but rad!