xenon

 
Pronunciation: /ˈzɛnɒn, ˈziː-/

noun

[mass noun]
  • the chemical element of atomic number 54, a member of the noble gas series. It is obtained by distillation of liquid air, and is used in some specialized electric lamps. (Symbol: Xe)

Origin:

late 19th century: from Greek, neuter of xenos 'strange'