There are a few different synonyms for the word "azidothymidine", which is a medication commonly used in the treatment of HIV/AIDS. Some of the alternative names for this drug include zidovudine, retrovir, and AZT. Zidovudine is the more formal chemical name for the drug, while retrovir and AZT are both brand names that have been used to market the medication. Although the name azidothymidine is still commonly used in medical literature, most patients and healthcare providers will be more familiar with the names retrovir or AZT, which are more commonly used in everyday conversation.