krypton

/ˈkɹɪptɒn/

krypton

English Noun Top 21,149

Definition

The chemical element (symbol Kr) with an atomic number of 36. It is a colourless, odourless noble gas that only reacts with fluorine. It is one of the rarest gases in the Earth's atmosphere.

Etymology

From Ancient Greek κρυπτός (kruptós, “hidden”) + -on, used for all noble gases.