Beryllium

//bəˈɹɪl.i.əm// noun

Definitions

Noun
  1. 1
    The chemical element (symbol Be) with an atomic number of 4; a soft silvery-white low density alkaline earth metal with specialist industrial applications. uncountable
  2. 2
    a light strong brittle grey toxic bivalent metallic element wordnet
  3. 3
    An atom of this element. countable

Etymology

From beryl + -ium, so called because the element is a key component of the mineral beryl.

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