barium
Pronunciation: ba′rē-ŭm, bā′rē-ŭm
Definition: A metallic, alkaline, divalent earth element; atomic no. 56, atomic wt. 137.327. Its insoluble salts are often used in radiology as contrast media.
[G. barys, heavy]
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Examples: glitazone, GI cocktail, etc.
