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The term "trifecta" originated in the early 1970s as a specific type of horse-racing bet. It involves correctly predicting the first, second, and third place finishers in a race, in that exact order. The word itself is a combination of the prefix "tri-" meaning "three," and the end of the word "perfecta," another horse-racing bet.12

Beyond horse racing, "trifecta" has broadened to mean any group of three desirable things.1

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