Alkahest
Pronunciation : Al"ka*hest
Part of Speech : n.
Etymology : [LL. alchahest, F. alcahest, a word that has an Arabic appearance, but was probably arbitrarily formed by Paracelsus.]
Definition : Defn: The fabled "universal solvent" of the alchemists; a menstruum capable of dissolving all bodies. -- Al`ka*hes"tic, a.
Source : Webster's Unabridged Dictionary, 1913