Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

HIV

play
noun \ˌāch-ˌī-ˈvē\

Simple Definition of HIV

  • medicine : a virus that causes AIDS

Source: Merriam-Webster's Learner's Dictionary

Full Definition of HIV

  1. :  either of two retroviruses that infect and destroy helper T cells of the immune system causing the marked reduction in their numbers that is diagnostic of AIDS —called also AIDS virus, human immunodeficiency virus — compare HIV-1, HIV-2

Examples of hiv in a sentence

  1. The patient is HIV positive .



1986

First Known Use of hiv

1986


Medical Dictionary

HIV

play
noun \ˌā-ˌchī-ˈvē\

Medical Definition of HIV

  1. :  any of several retroviruses and especially HIV-1 that infect and destroy helper T cells of the immune system causing the marked reduction in their numbers that is diagnostic of AIDS—called also AIDS virus, human immunodeficiency virus




Learn More about hiv


Seen and Heard

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

WORD OF THE DAY

at a gallop

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommadate acommodate accommodate accomodate
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