Definition of national debt noun from the Oxford Advanced Learner's Dictionary

 

national debt

 noun
noun
BrE
 
; NAmE
 
[usually singular]
 
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the total amount of money that the government of a country owes Culture In Britain, the amount borrowed every year is known as the Public Sector Borrowing Requirement, and is added to the National Debt.
See the Oxford Advanced American Dictionary entry: national debt