polonium
/pə'louniəm/
Definition
- Noun:
- A radioactive metallic element: Polonium is a chemical element that is radioactive, metallic in nature, and shares similarities with tellurium and bismuth. It is found in uranium ores but can also be artificially created by bombarding bismuth with neutrons in a nuclear reactor.
Usage Examples
- Noun:
- Polonium-210 is a highly radioactive isotope.
- The discovery of polonium was a milestone in the study of radioactivity.
- Trace amounts of polonium can be found in some uranium ores.
Advanced Usage
- Scientific Context: Polonium is often discussed in contexts involving nuclear physics, radiation chemistry, and the history of science, particularly its discovery by Marie and Pierre Curie.
- The alpha particles emitted by polonium are used in certain static eliminators.
Variants and Related Words
- Polonium-210 (n): The most common and significant isotope of polonium, known for its high radioactivity.
- Polonium-210 was used as a heat source in early space satellites.
Synonyms
- Element 84: Refers to polonium by its atomic number.
- Po: The chemical symbol for polonium.
Notes on Meaning
- Polonium is primarily a scientific term with a single, specific meaning related to its properties as a radioactive element. It does not have common idiomatic or figurative uses outside of technical contexts. Its significance is largely historical (due to its discoverers) and practical in specialized applications (e.g., as a neutron source or alpha-particle emitter).
Noun
-
a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
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