Definition of "inconvertible" [in•con•vert•i•ble]

• Not redeemable for money in coin: inconvertible paper currency. (adjective)
• Not able to be legally exchanged for another currency. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• ""If, therefore, the issue of inconvertible paper were subjected to strict rules, one rule being that whenever bullion rose above the Mint price gold parity, the issues should he contracted until the market price of bullion and the Mint price were again in accordance, such a currency would not be subject to any of the evils usually deemed inherent in an inconvertible paper.""
• "Because whatever you might say about its graphics, the principles – the simple 14 words – are inconvertible."
• "Large chunks of U.S. cash are held abroad, where they are sometimes used in large quantities for black market transactions and as stores of value in countries whose own currencies are inflationary or inconvertible."