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Definition of HIV noun from the Oxford Advanced American Dictionary

 

HIV

 noun
noun
NAmE//ˌeɪtʃ aɪ ˈvi//
 
[uncountable]
 
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the abbreviation forhuman immunodeficiency virus(the virus that can cause AIDS ) to be infected with HIV to be HIV-positive/HIV-negative (= to have had a medical test which shows that you are/are not infected with HIV)
See the Oxford Advanced Learner's Dictionary entry: HIV