krypton

/ˈkrɪptɑn/
noun
  1. A colorless, odorless gas that is one of the chemical elements. It is used in some types of lights and lasers.
    • Krypton is often used in high-performance flashlights for photography.
    • Scientists study krypton to learn more about the properties of noble gases.
    • The sign glowed with a pale blue light because it was filled with krypton gas.
  2. The fictional home planet of Superman in comics and movies.
    • In the movie, Krypton is shown as a highly advanced but doomed civilization.
    • Fans of Superman know that Krypton was destroyed shortly after his escape.
    • Superman was sent to Earth from the planet Krypton as a baby.
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