noun: (sciences, slang) The CRC Handbook of Chemistry and Physics, a frequently used reference work published by CRC Press.
noun: (chemistry, US) Initialism of Chemical Rubber Company. (a former US-American manufacturer of chemical laboratory equipment, now the publishing company CRC Press.)
noun: (Christianity) Initialism of Christian Reformed Church.
noun: Initialism of county road commission.
noun: (computing) Initialism of cyclic redundancy check. [(computing) A type of hash function that produces a checksum used to detect and correct transmission errors in data (abbreviation CRC).]
noun: (aviation) Initialism of continuous repetitive chime, the "cricket" aural warning intentionally designed to be extremely difficult for pilots to ignore.