from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Extreme nationalism, especially when opposed to international cooperation.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Extreme nationalism, the belief in the superiority of one's nation and of the paramount importance of advancing it.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. fanatical patriotism
ultra- + nationalism (Wiktionary)