Human immunodeficiency virus, the cause of acquired immunodeficiency syndrome (AIDS).
Biology Dictionary
Definition:
Acronym for Acquired Immunodeficiency Syndrome. An epidemic disease caused by an infection by human immunodeficiency virus (HIV-1), a retrovirus that causes immune system failure and debilitation and is often accompanied by cancers such as Kaposi's sarcoma as well as secondary infections such as tuberculosis. AIDS is spread through direct contact with bodily fluids.