Longman Dictionary of Contemporary English homepage

Topic: ELEMENTS

Date: 1800-1900
Language: Greek
Origin: xenos 'strange' (because it is rare)

xenon

 noun
     
xen‧on [uncountable]
HCE a colourless gas that is found in very small quantities in the air. It is a chemical element: symbol Xe
Definition of xenon from the Longman Dictionary of Contemporary English within
the topic ELEMENTS
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