Etymology
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Mach 
measure of speed relative to the speed of sound (technically Mach number), 1937, named in honor of Austrian physicist Ernst Mach (1838-1916).
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Machiavelli 

Florentine statesman and author (1469-1527); see Machiavellian. His name was Englished 16c.-18c. as Machiavel.

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Turing machine (n.)
1937, named for English mathematician and computer pioneer Alan M. Turing (1912-1954), who described such a device in 1936.
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