Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

AZT

play
noun \ˌā-(ˌ)zē-ˈtē\

Definition of AZT

  1. :  an antiviral drug C10H13N5O4 that inhibits replication of some retroviruses (such as HIV) and is used to treat AIDS —called also azidothymidine, zidovudine

See AZT defined for English-language learners

See AZT defined for kids

Explore M-W

emoji-the-quiz
The Emoji Quiz
image1358596246
Words About Word Play
video-title-words-of-the-year-1066
Words of the Year: 1066
alt-597a00ef4b9d7
'Motif' vs 'Leitmotif'

First Known Use of azt

1985

AZT Defined for English Language Learners

AZT

play
noun

Definition of AZT for English Language Learners

  • medical : a drug used to treat AIDS

Medical Dictionary

AZT

play
noun \ˌā-(ˌ)zē-ˈtē\

Medical Definition of AZT

  1. :  an antiviral drug C10H13N5O4 that inhibits replication of some retroviruses (as HIV) and is used to treat AIDS—called also azidothymidine, ZDV, zidovudine; see retrovir

Seen and Heard

What made you want to look up AZT? Please tell us where you read or heard it (including the quote, if possible).

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

fester

play

to become worse as time passes

Get Word of the Day daily email!

TRENDING NOW

  1. transgender Trump reverses military policy allowing transgender people to serve

  2. beleaguer 'Being subjected to constant or repeated trouble or harassment'

  3. scaramouch A new White House communications director

  4. non sequitur “It does not follow”

  5. admiral's mast A massive search ends with an 'admiral's mast'.

SEE ALL

BROWSE DICTIONARY

AZT

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

alt-597a00ef4b9d7
'Motif' vs 'Leitmotif'

A pattern emerges.

alt-5978b44edfb13
Our (Almost) Final Word on 'Penultimate'

The ultimate guide to using penultimate.

alt-5978cb55e8ba5
The Grammatical History of 'Awaken'/'Awoken'/'Awakened'

Or you can just go back to bed.

alt-59775cb5d7779
Words We're Watching: 'Aquafaba'

Don't dump out the bean water just yet...

Ask the Editors

video-title-words-of-the-year-1066
Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

payday
How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless
Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals
Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

emoji-the-quiz
The Emoji Quiz

Think you’re an emoji 👓 expert? Let’s see 🤔

Take the quiz
image941935269
A Game of Thrones Word Quiz

In the Game of Thrones quiz, you learn some new vocabulary. (It’s quite safe, really. You will not die.)

Take the quiz
Name That Thing
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz
SCRABBLE® Sprint
SCRABBLE® Sprint

SCRABBLE® fans, sharpen your skills!

Play the game