Definition of retrovirus noun from the Oxford Advanced Learner's Dictionary

 

retrovirus

 noun
noun
BrE BrE//ˈretrəʊvaɪrəs//
 
; NAmE NAmE//ˈretroʊvaɪrəs//
 
 
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any of a group of viruses that includes HIV. Retroviruses multiply by making changes to DNA. the discovery of a new retrovirus in humans a retrovirus that affected chimpanzees see also antiretroviral
See the Oxford Advanced American Dictionary entry: retrovirus