Century Dictionary and Cyclopedia
- n. A supposed new chemical element announced in 1862 by Bahr as present in a Swedish mineral resembling orthite. Its supposed oxid was probably thoria, though it may have been a mixture of earths of the yttria and ceria groups.
- n. chemistry, archaic A supposed chemical element extracted from wasite, later identified as thorium.
GNU Webster's 1913
- n. (Chem.) A rare element supposed by Bahr to have been extracted from wasite, but now identified with thorium.
- Wasa + -ium, after a former royal family of Sweden. (Wiktionary)
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