Dictionary
du•ral•u•min
Pronunciation: (doo-ral'yu-min, dyoo-), [key]—
n.
an alloy of aluminum that is 4 percent copper and contains small amounts of magnesium, manganese, iron, and silicon: used for applications requiring lightness and strength, as in airplane construction.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.