The chemical element of atomic number 36, a member of the noble gas series. It is obtained by distillation of liquid air and is used in some kinds of electric light.
- ‘Other gasses - such as argon and krypton - can be used in the space between the glass panes instead of air.’
- ‘However, some windows use argon or krypton in this space to improve thermal performance.’
- ‘Sometimes a mixture of krypton and argon are used instead of the mercury.’
- ‘Consider windows that fill that space with gases like argon, krypton, or a mix of the two.’
- ‘They attributed those lines to the presence of three new elements, which they named neon, krypton, and xenon.’
Late 19th century: from Greek krupton, neuter of kruptos hidden.