# SIV

> English word · Noun · frequency rank #61,115

## Definitions
1. Initialism of simian immunodeficiency virus.
2. Initialism of swine influenza virus, usually Influenza A virus.
3. Initialism of special immigrant visa.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/siv