Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
ironize
ironman
ironmonger
ironperson
Ironside
ironside
Ironsides
ironsides
ironstone
ironware
ironweed
ironwoman
ironwood
ironwork
ironworker
ironworks
irony
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

irrational number
ir·ra·tion·al num·ber (plural ir·ra·tion·al num·bers)


noun 
Definition:
 
real number that is not rational: any real number that cannot be expressed as the exact ratio of two integers, e.g. √2 and π
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft