WBW #20

beryllium

ORIGIN: New Latin, from Greek bēryllion, diminutive of bēryllos beryl

DEFINITION: a steel-gray light strong brittle toxic bivalent metallic element having high electric conductivity and high permeability to X rays that occurs in combination (as in beryl, chrysoberyl, and phenakite), that is produced by reduction of its compounds (as by electrolysis), and that is used chiefly as a hardening agent in alloys (as with copper), as windows in X-ray tubes, and as a moderator and reflector in nuclear reactors; symbol Be; called also glucinium

SENTENCE: Beryllium is highly toxic and can cause chronic beryllium disease, which affects the lungs.

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