IU


  1. immunizing unit.

  2. Also I.U. international unit.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use IU in a sentence

  • And here's a perfectly beautiful one D-i-o-n-y-s-i-u-s Carpenter.

    Tabitha at Ivy Hall | Ruth Alberta Brown

British Dictionary definitions for IU

IU

abbreviation for
  1. immunizing unit

  2. international unit

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