1. inconvertible - Adjective
2. inconvertible - Adjective Satellite
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.
Source: Webster's dictionarythe alchemists were unable to accept the inconvertible nature of elemental metals Source: Internet
The bishops relented and added a clause, saying that, according to the decision of Leo, in Christ there are two natures united, inconvertible, inseparable. Source: Internet
Therefore, most countries' currencies were still basically inconvertible. Source: Internet