ci
— Noun
– English
~ a unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second
CIA
— Noun
– English
~ an independent agency of the United States government responsible for collecting and coordinating intelligence and counterintelligence activities abroad in the national interest; headed by the Director of Central Intelligence under the supervision of the President and National Security Council