Enigma was first recorded in English around 1530–40 and comes from the Greek word aínigma, “riddle,” which derived from aînos, “fable.”
Enigma was also the name of a ciphering machine used by the German military during World War II. A precursor to computer encryption, the Enigma machine encoded messages into a seemingly random string of letters to be decoded by another Enigma machine.
The deciphering of the Enigma code by Alan Turing and a team of codebreakers allowed the Allies to secretly read intercepted German messages and is thought to be a major factor in the Allied victory.
EXAMPLES OF ENIGMA
His mysterious smile and cryptic words rendered him an enigma that no one could decipher.
Trying to understand her enigma of a personality proved to be an intriguing challenge for those around her.
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