Meaning of standard dollar

stand'ard dol'lar

Pronunciation: [key]
  1. the basic monetary unit of the U.S., since January 31, 1934, containing 15 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.