: a disease of the human immune system that is characterized cytologically especially by reduction in the numbers of CD4-bearing helper T cells to 20 percent or less of normal thereby rendering the subject highly vulnerable to life-threatening conditions (such as Pneumocystis carinii pneumonia) and to some (such as Kaposi's sarcoma) that become life-threatening and that is caused by infection with HIV commonly transmitted in infected blood especially during illicit intravenous drug use and in bodily secretions (such as semen) during sexual intercourse
Examples of AIDS in a Sentence
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The charity said the benefit has so far raised nearly $300 million for its research programs on Acquired Immune Deficiency Syndrome (AIDS), caused by the human immunodeficiency virus (HIV).
—
Miranda Murray, USA Today, 24 May 2025
On Thursday, the pair attended the glitzy amfAR Gala Cannes 2025, which raised funds to support AIDS research.
—Ashley Hume, FOXNews.com, 24 May 2025
The cause in question is fundraising for amfAR’s research into a cure for HIV and AIDS, which has also advanced research that has supported treatments and vaccines for other viruses, such as COVID-19.
—Rhonda Richford, Footwear News, 23 May 2025
The legal group has filed a number of lawsuits challenging the Trump administration cuts, including one on behalf of the San Francisco AIDS Foundation and other nonprofits.
—Kevin Rector, Los Angeles Times, 23 May 2025
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Miranda Murray, USA Today, 24 May 2025
On Thursday, the pair attended the glitzy amfAR Gala Cannes 2025, which raised funds to support AIDS research.
—Ashley Hume, FOXNews.com, 24 May 2025
The cause in question is fundraising for amfAR’s research into a cure for HIV and AIDS, which has also advanced research that has supported treatments and vaccines for other viruses, such as COVID-19.
—Rhonda Richford, Footwear News, 23 May 2025
The legal group has filed a number of lawsuits challenging the Trump administration cuts, including one on behalf of the San Francisco AIDS Foundation and other nonprofits.
—Kevin Rector, Los Angeles Times, 23 May 2025
See All Example Sentences for AIDS
Cite this Entry
“AIDS.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/AIDS. Accessed 29 May. 2025.
Copy CitationKids Definition
AIDS
noun
: a serious disease of the human immune system marked by destruction of a large proportion of the helper T cells in the body due to infection by the HIV virus commonly transmitted especially in blood and semen
Medical Definition
AIDS
noun
: a disease of the human immune system that is characterized cytologically especially by a reduction in the numbers of CD4-bearing helper T cells to 20 percent or less of normal thereby rendering the subject highly vulnerable to life-threatening conditions (as Pneumocystis carinii pneumonia) and to some that become life threatening (as Kaposi's sarcoma) and that is caused by infection with HIV commonly transmitted in infected blood especially during illicit intravenous drug use and in bodily secretions (as semen) during sexual intercourse
called also acquired immune deficiency syndrome, acquired immunodeficiency syndrome
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