kr has definitions from the fields of chemistry,politics
1
[ noun ] (politics) 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 1
2
[ noun ] (chemistry) a colorless element that is one of the six inert gasses; occurs in trace amounts in air
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