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1.
Acronym for United States Domestic Market.
Used to describe cars or automotive parts that are manufactured in/imported from the US.
Derived from JDM which means Japanese Domestic Market.
AEM INdcution kits are USDM.
by nikolaj May 04, 2005
 
2.
Acronym for US Data Management
USDM is short for US Data Management
by USDM April 04, 2010