Definition of radium
: an intensely radioactive brilliant white metallic element that resembles barium chemically, occurs in combination in minute quantities in minerals (such as pitchblende or carnotite), emits alpha particles and gamma rays to form radon, and is used chiefly in luminous materials and in the treatment of cancer — see element table
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Recent Examples of radium from the Web
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Chiitolé Glrlrll r/sbubby chabouma 20h ago 25 points 0 comments McDablous', simimalies for McNaldos's butt isn'ot r/sbubby radium-v 21h ago 16 points 0 comments Azizz Puuh 50 points 0 comments Of course, removing letters all together was necessary.
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Chiitolé Glrlrll r/sbubby chabouma 20h ago 25 points 0 comments McDablous', simimalies for McNaldos's butt isn'ot r/sbubby radium-v 21h ago 16 points 0 comments Azizz Puuh 50 points 0 comments Of course, removing letters all together was necessary.
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Other harmful colors include fluorescent radium green, arsenic green, and uranium orange.
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While radium exposure carries some degree of risk, the Illinois EPA established a maximum contaminant level of 5 picocuries per liter in public water supplies.
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In Illinois, high radium levels occur primarily in the northern third of the state, department officials said.
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Weinheimer said his character, Roeder, is guided by his morals and struggles with the realization that the women are being poisoned by radium due to work at his company.
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The painters at The Radium Dial Co. and The Radium Luminous Materials Corp. were told repeatedly that radium wasn’t dangerous, even though warnings about radioactivity had been trickling out since 1906.
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Their discovery of radioactive elements radium and polonium earned them the 1903 Nobel Prize in Physics, shared with Henri Becquerel.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'radium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of radium
New Latin, from Latin radius ray
RADIUM Defined for English Language Learners
radium
playDefinition of radium for English Language Learners
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: a radioactive element that is used medically in cancer treatments
RADIUM Defined for Kids
radium
playDefinition of radium for Students
: a strongly radioactive element found in very small quantities in various minerals (as pitchblende) and used in the treatment of cancer
Medical Dictionary
radium
playMedical Definition of radium
: an intensely radioactive shining white metallic element that resembles barium chemically, that occurs in combination in minute quantities in minerals (as pitchblende or carnotite) principally as the isotope of mass number 226 formed from uranium 238, having a half-life of 1620 years, and emitting alpha particles and gamma rays to form radon, and that is used chiefly in luminous materials and in the treatment of cancer—symbol Ra; see element table
Learn More about radium
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See words that rhyme with radium Spanish Central: Translation of radium Nglish: Translation of radium for Spanish speakers Britannica.com: Encyclopedia article about radium
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