Fluxible
The Century Dictionary and Cyclopedia
Capable of undergoing flux or change; specifically, fusible.
the GNU version of the Collaborative International Dictionary of English
adjective.
Capable of being melted or fused, as a mineral.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
Capable of being
melted
or
fused
.
Word Usage
"So that all three are in _Saturn_, but they are not fix'd therein, but they are clean, pure, incombustible, fluxible as Wax; in it are all things which the Philosophers have mentioned."