HIV

noun

ˌāch-ˌī-ˈvē 

: 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

Examples of HIV in a Sentence

Recent Examples on the Web

In extreme cases, infections such as HIV or hepatitis can result from unsanitary conditions. —Laura Daniella Sepulveda, The Arizona Republic, 13 May 2024

Shared needles promote the spread of HIV and Hepatitis C. Reusing needles promotes endocarditis, an infection that inflames the lining of the heart's valves and chambers. —Georgea Kovanis, Detroit Free Press, 13 May 2024

Word History

First Known Use

1986, in the meaning defined above

Phrases Containing HIV

• anti-HIV

Kids Definition

HIV

noun

ˌāch-ˌī-ˈvē 

: any of a group of viruses that infect and destroy helper T cells causing the marked reduction in their numbers that is diagnostic of AIDS

Medical Definition

HIV

noun

ˌā-ˌchī-ˈvē 

1

: either of two retroviruses (species Human immunodeficiency virus 1 and 2 of the genus Lentivirus) that infect and destroy helper T cells of the immune system and that when left untreated cause AIDS

Note: HIV retroviruses are transmitted through contact with blood, semen, rectal and vaginal fluids, or breast milk and typically cause flu-like symptoms during the acute phase of infection, but often cause few or no symptoms during the chronic phase of infection when treated with antiretroviral drugs.

called also AIDS virus, human immunodeficiency virus

compare hiv-1, hiv-2

2

: the infection or disease caused by HIV