a colorless element that is one of the six inert gasses; occurs in trace amounts in air

[ Syn: krypton , krypton , kr , kr , atomic number 36 , atomic number 36 ]

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

[ Syn: khmer rouge , kr , party of democratic kampuchea , communist party of kampuchea ]