About The Word Actinium

Bay Area Crosswords

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Actinium

Actinium Meaning & Definition
Actinium Definition And Meaning

What's The Definition Of Actinium?

[n] a radioactive element of the actinide series; found in uranium ores

Synonyms | Synonyms for Actinium: Ac | atomic number 89

Related Terms | Find terms related to Actinium:

See Also | chemical element | element | uranium ore

Actinium In Webster's Dictionary

\Ac*tin"i*um\, n. [Gr. ?, ?, ray.] (Chem.) A supposed metal, said by Phipson to be contained in commercial zinc; -- so called because certain of its compounds are darkened by exposure to light.

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