1. A colourless element that is one of the six inert gasses; occurs in trace amounts in air
   - krypton, atomic number 36

1. A communist organization formed in Cambodia in 1970; became a terrorist organization in 1975 when it captured Phnom Penh and created a government that killed an estimated three million people; was defeated by Vietnamese troops but remained active until 1999
   - Khmer Rouge, Party of Democratic Kampuchea, Communist Party of Kampuchea

Type of: argonon, foreign terrorist organisation [Brit], foreign terrorist organization, FTO, inert gas, noble gas, terrorist group, terrorist organisation [Brit], terrorist organization

Part of: air

Encyclopedia: Kr