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stand'ard dol'lar

the basic monetary unit of the U.S., since January 31, 1934, containing 15⁵/21 grains of gold, 0.900 fine: previously contained 25.8 grains of gold, 0.900 fine.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

standard deviation

Standard English

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