IV

noun
\ ˌī-ˈvē How to pronounce IV (audio) \
plural IVs

Definition of IV

 (Entry 1 of 2)

: an apparatus used to administer a fluid (as of medication, blood, or nutrients) intravenously also : a fluid administered by IV

Definition of IV (Entry 2 of 2)

intravenous; intravenously

Examples of IV in a Sentence

Noun The nurse started an IV. The patient was hooked up to an IV.

First Known Use of IV

Noun

circa 1955, in the meaning defined above

History and Etymology for IV

Noun

intravenous

Learn More About IV

Dictionary Entries Near IV

ius

IV

iva

See More Nearby Entries 

Statistics for IV

Cite this Entry

“IV.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/IV. Accessed 6 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for IV

IV

noun

English Language Learners Definition of IV

: a device that is used to allow a fluid (such as blood or a liquid medication) to flow directly into a patient's veins

IV

noun
\ ˈī-ˈvē How to pronounce IV (audio) \
plural IVs

Medical Definition of IV

 (Entry 1 of 2)

: an apparatus used to administer a fluid (as of medication, blood, or nutrients) intravenously also : a fluid administered by IV

IV

abbreviation

Medical Definition of IV (Entry 2 of 2)

1 intravenous; intravenously
2 intraventricular

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Spell It

Can you spell these 10 commonly misspelled words?

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!