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DEFINITION of 'UST'

The abbreviation for the United States Treasury. UST is commonly used for references to the Treasury debt that the U.S. issues. Traders will often use the phrases 'UST yields' or 'UST curve' to refer to Treasury yields or the Treasury yield curve.

INVESTOPEDIA EXPLAINS 'UST'

The U.S. Treasury is the department of government that is responsible for issuing debt in the form of Treasury bonds, bills and notes. Some of the government branches operating under the U.S. Treasury umbrella include the IRS, U.S. Mint, Bureau of the Public Debt, and the Alcohol and Tobacco Tax Bureau.

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