antiretroviral adjective 1noun 1forms 3 adjective1 •That combats infection by retroviruses.Begun in 2003 and covering some 50 countries, Pepfar has saved the lives of an estimated 13m people living with HIV-Aids, mostly in Africa, by providing them with antiretroviral drugs. — 2019 noun1 •An agent that combats retroviruses. formsantiretrovirals · more antiretroviral · most antiretroviral