beryllium

noun be·ryl·li·um \bə-ˈri-lē-əm\

Definition of BERYLLIUM

: a steel-gray light strong brittle toxic divalent metallic element used chiefly as a hardening agent in alloys — see element table

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New Latin, from Greek bēryllion

First Known Use: circa 1847

Medical Dictionary

noun be·ryl·li·um \bə-ˈril-ē-əm\

: a steel-gray light strong brittle toxic bivalent metallic element used chiefly as a hardening agent in alloys—symbol Be; see element table

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