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: either of two retroviruses that infect and destroy helper T cells of the immune system causing the marked reduction in their numbers that is diagnostic of AIDS

called also AIDS virus, human immunodeficiency virus

compare hiv-1, hiv-2

Example Sentences

The patient is HIV positive .

Word History

First Known Use

1986, in the meaning defined above

Time Traveler
The first known use of HIV was in 1986

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