Definition of I-9 form noun from the Oxford Advanced American Dictionary

 

I-9 form

 noun
noun
NAmE//ˌaɪ ˈnaɪn fɔrm//
 
 
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an official document that an employer must have that shows that an employee has the right to work in the U.S.
See the Oxford Advanced Learner's Dictionary entry: I-9 form