barium

Meanings

1. 1
   noun

   a soft silvery metallic element of the alkali earth group

2. 2
   noun

   The chemical element (symbol Ba) with an atomic number of 56. It is a soft, reactive, silvery alkaline earth metal.

3. 3
   noun

   A single atom of this element.

4. 4
   noun

   Barium sulphate suspension.

Coined by British chemist Humphry Davy in 1808, from baryta + -ium.

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