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electrum

[ih-lek-truh m] /ɪˈlɛk trəm/
noun
1.
an amber-colored alloy of gold and silver used in ancient times.
2.
an alloy composed of about 50 percent copper, 30 percent nickel, and 20 percent zinc.
3.
German silver; nickel silver.
Origin of electrum
1350-1400
1350-1400; Middle English < Latin < Greek ḗlektron amber, alloy of gold and silver
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for electrum

electrum

/ɪˈlɛktrəm/
noun
1.
an alloy of gold (55–88 per cent) and silver used for jewellery and ornaments
Word Origin
C14: from Latin, from Greek ēlektron amber
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for electrum
n.

"alloy of gold and up to 40% silver," late 14c. (in Old English elehtre), from Latin electrum "alloy of gold and silver," also "amber" (see electric). So called probably for its pale yellow color.

Online Etymology Dictionary, © 2010 Douglas Harper
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