interquartile range: Meaning and Definition of

in•ter•quar'tile range"

Pronunciation: (in"tur-kwôr'tīl, -til), [key]
— Statistics. Statistics.
  1. the range of values of a frequency distribution between the first and third quartiles.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.