Krypton (noun)

1. A chemical element of the noble gas series in Group 18 of the periodic table, symbol Kr, atomic number 36.
2. A gas that is used in electric lamps and in some photographic flashbulbs.

Origin:

From greek kryptos hidden + -on.

Examples:

1. Krypton is a gas that is used in electric lamps and in some photographic flashbulbs.
2. Krypton is a chemical element with the symbol Kr and atomic number 36.
3. The element krypton is used in lighting and photography.
4. Krypton is one of the noble gases.
5. Krypton is used as a filling gas in incandescent lamps, fluorescent lamps, and in some high-power gas lasers.