| 释义 |
{{Wiktionary|USD|us'd}} USD is an abbreviation for United States dollar, the official currency of the United States. USD may also refer to: - University of San Diego, San Diego, California, United States
- University of South Dakota, Vermillion, South Dakota, United States
- Under Secretary of Defense, United States
- The Upside Down, Houdini's term for the Chinese Water Torture Cell
- Ultrasonic Silent Drive, Tamron lens designation
- Upside-down motorcycle fork
- Unified school district
- Unité spéciale de détention (USD), the French name of the Special Handling Unit (SHU) at the Regional Reception Centre, a Canadian prison
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