Around electronics, the cathode ray tube of a display device, such as the television Inside U.S. schools, the Criterion-Referenced Test Inside mathematics, the Chinese remainder theorem Within computing, the C Run-Time Library Within medicine, it means Corneal Refractive Therapy. Inside astronomy, Crt is used for the constellation Crater. Around Law, CRT is a Charitable Remainder Trust Inside philosophy or sociology, CRT is the school of thought known as Critical race theory

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