from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An international organization of loosely affiliated cells that carry out attacks and bombings in the attempt to disrupt the economies and influence of Western nations and advance Islamic fundamentalism.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A worldwide network of militant Islamic organizations and individuals.
Arabic al-qā'ida, the base : al-, the + qā'ida, foundation, base, feminine participle of qa'ada, to sit.(American Heritage® Dictionary of the English Language, Fourth Edition)
Representing Arabic القاعدة (al-qāʕida, "the foundation, the base"). (Wiktionary)