xenon
Concise Oxford English Dictionary © 2008 Oxford University Press:
xenon /ˈzɛnɒn, ˈziː-/
▶noun the chemical element of atomic number 54, a member of the noble gas series, obtained by distillation of liquid air and used in some specialized electric lamps. (Symbol: Xe)
– origin C19: from Gk, neut. of xenos ‘strange’.
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