What is AZT ?

Explanation

**Step-by-Step Solution:**

1. **Definition of AZT**: AZT stands for Azidothymidine, which is also known as Zidovudine. It is a medication used to treat HIV (Human Immunodeficiency Virus) infection.

*Hint: Remember that AZT is an abbreviation; knowing what it stands for can help you understand its function.*

2. **Classification**: AZT is classified as a nucleoside analog reverse transcriptase inhibitor (NRTI). This means it mimics the building blocks of DNA, which helps to inhibit the reverse transcriptase enzyme that HIV uses to replicate.

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