from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An alloy of aluminum that contains copper, manganese, magnesium, iron, and silicon and is resistant to corrosion by acids and sea water.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. an alloy of over 90% aluminium, 4% copper and traces of manganese, magnesium, iron and silicon, widely used in the aircraft industry
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an aluminum-based alloy
Originally a trademark.(American Heritage® Dictionary of the English Language, Fourth Edition)