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coinage (n.)

late 14c., "currency, coined money," from Old French coignage, from coignier "to coin," from coing "piece of money: (see coin (n.)). Meaning "act or process of coining money" is from early 15c.; sense "deliberate formation of a new word" is from 1690s, from a general sense of "something invented" (c. 1600).