Medical Definition of AZTAZT: Azidothymidine, now renamed zidovudine, but still best known by the abbreviation AZT. This antiviral drug is prescribed, usually in combination with protease inhibitors and other drugs, to treat HIV infection in patients with AIDS. Last Editorial Review: 3/19/2012 Back to MedTerms online medical dictionary A-Z List Need help identifying pills and medications? |


