noun[mass noun] trademark
- He said the shoes were made from the super lightweight alloy metal widely used in aircraft - Duralumin - which had the strength of steel and the lightness of aluminium.
- Many of the earliest metal propellers were manufactured in one piece of forged Duralumin.
Early 20th century: perhaps from Latin durus 'hard' + aluminium, but probably influenced by Düren, the name of the Rhineland town where such alloys were first produced.
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