Billon Definition

bĭlən

noun

An alloy of gold or silver with a greater proportion of another metal, such as copper, used in making coins.

American Heritage

An alloy used in some coins, consisting of gold or silver with a heavy proportion of another metal, as copper.

Webster's New World

An alloy of silver with a high percentage of copper, used in making medals and tokens.

American Heritage

Any of several alloys of precious metals and base metals that is used (where legal) to make coins, medals etc.

Wiktionary

Other Word Forms of Billon

Singular:

billon

Plural:

billons

French from Old French ingot from bille log billet²

From American Heritage Dictionary of the English Language, 5th Edition

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