Noah Webster
Inconvertible
INCONVERT'IBLE, adjective [in and convertible.] Not convertible; that cannot be transmuted or changed into something else. One metal is inconvertible into another. Bank notes are sometimes inconvertible into specie.
INCONVERT'IBLE, adjective [in and convertible.] Not convertible; that cannot be transmuted or changed into something else. One metal is inconvertible into another. Bank notes are sometimes inconvertible into specie.