'Inconvertible' definitions:

Definition of 'inconvertible'

From: WordNet
adjective
Used especially of currencies; incapable of being exchanged for or replaced by another currency of equal value [syn: inconvertible, unconvertible, unexchangeable] [ant: convertible, exchangeable]
adjective
Not capable of being changed into something else; "the alchemists were unable to accept the inconvertible nature of elemental metals" [syn: inconvertible, untransmutable]

Definition of 'Inconvertible'

From: GCIDE
  • Inconvertible \In`con*vert"i*ble\, a. [L. inconvertibilis: cf. F. inconvertible. See In- not, and Convertible.] Not convertible; not capable of being transmuted, changed into, or exchanged for, something else; as, one metal is inconvertible into another; bank notes are sometimes inconvertible into specie. --Walsh. [1913 Webster]