barium
UK /ˈbɛəɹɪəm/ US /ˈbɛəɹɪəm/
noun 3
Definitions
noun
1
The chemical element (symbol Ba) with an atomic number of 56. It is a soft, reactive, silvery alkaline earth metal.
2
A single atom of this element.
3
Barium sulphate suspension.
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