standard dollar

noun

the basic monetary unit of the U.S., since January 31, 1934, containing 15.2 grains of gold, 0.900 fine: previously contained 25.8 grains of gold, 0.900 fine.

An Americanism dating back to 1875–80

In 1785 the American standard was fixed at 375.64 grains of pure silver which became the unit of account, the standard dollar.

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