inconvertible

Definition of Inconvertible in English :

used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value

2. inconvertible, untransmutable

not capable of being changed into something else

Example Sentences:
'the alchemists were unable to accept the inconvertible nature of elemental metals'

WordNet Lexical Database for English. Princeton University. 2010.

Inconvertible

adjective

1.

incapable of being converted or changed

2. (of paper currency)

a.

not redeemable for gold or silver specie

b.

not exchangeable for another currency

adjective

that cannot be converted; that cannot be changed or exchanged

paper money that is inconvertible into silver

adj.

1. Not redeemable for money in coin: inconvertible paper currency.

2. Not able to be legally exchanged for another currency.