: a lentivirus (species Simian immunodeficiency virus) that causes a disease in monkeys similar to AIDS and that is closely related to HIV-2

Examples of SIV in a Sentence

Recent Examples on the Web The backlog of principal Afghan SIV applicants was up to nearly 155,000 by December 2022. Mike Brest, Washington Examiner, 1 Sep. 2023 While the State Department has streamlined the SIV application process, there are thousands of Afghans who helped the U.S. military still trapped in Afghanistan, their lives in direct danger from the Taliban. Grace Segers, The New Republic, 14 Aug. 2023 Sullivan cited the State Department Inspector General, saying that over 152,000 SIV applicants still reside in Afghanistan. Beth Bailey, Fox News, 6 Aug. 2023 While the Biden administration recently extended that parole status for another year, these evacuees are still unable to obtain permanent legal status except through the asylum or special immigrant visa, or SIV, application systems—both of which are onerous and severely backlogged. Grace Segers, The New Republic, 27 July 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'SIV.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1987, in the meaning defined above

Time Traveler
The first known use of SIV was in 1987

Dictionary Entries Near SIV

Cite this Entry

“SIV.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/SIV. Accessed 24 May. 2024.

Medical Definition

: a retrovirus of the genus Lentivirus (species Simian immunodeficiency virus) that causes a disease in monkeys similar to AIDS and that is closely related to HIV-2 of humans

called also simian immunodeficiency virus

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