• synonyms


See more synonyms for IV on Thesaurus.com
  1. intravenous.
  2. intravenous drip.
  3. intravenous injection.
  4. intravenously.
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noun, plural IVs, IV's.
  1. an intravenous device for delivering electrolyte solutions, medicines, and nutrients.
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Origin of IV

First recorded in 1950–55


  1. increased value.
  2. initial velocity.
  3. invoice value.
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  1. initial velocity.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for iv

Contemporary Examples

Historical Examples

  • (iv) This vast ideal system is supposed to be based upon experience.



  • It's aff with her apron and on with her bonnet, iv'ry chance.

  • Under Edward IV his lands are naturally granted to other people and he is attainted.

    Henry the Sixth

    John Blacman

  • All these possessions and privileges of the monks were confirmed by Dom João iv.

    Portuguese Architecture

    Walter Crum Watson

  • Not of course the famous son of Charles v., but a son of Philip iv.

    Portuguese Architecture

    Walter Crum Watson

British Dictionary definitions for iv



abbreviation for
  1. intravenous(ly)
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

iv in Medicine


  1. intravenous
  2. intravenously
  3. intraventricular
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.