noun Date: 1986 a lentivirus (species Human immunodeficiency virus 2 ) that causes AIDS especially in western Africa and is less virulent than HIV-1
HIV-2
Meaning of HIV-2 in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012