Meanings (ES + gloss)
electro
An alloy of gold and silver, used by the ancients; now specifically a natural alloy with between 20 and 50 per cent silver.
A natural alloy containing more than 20 per cent silver is called electrum, and was regarded by the ancients as a different metal from gold.
Native gold almost always contains silver in amounts varying widely between 5 and 50 per cent. This natural alloy is known as electrum although in classical antiquity where the wor…
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