Barium

noun

Definitions

Noun
  1. 1
    The chemical element (symbol Ba) with an atomic number of 56. It is a soft, reactive, silvery alkaline earth metal. uncountable, usually
  2. 2
    a soft silvery metallic element of the alkali earth group; found in barite wordnet
  3. 3
    A single atom of this element. countable, usually
  4. 4
    Barium sulphate suspension. uncountable, usually

Etymology

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

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