1) Alcahest 2) Alchemical substance 3) Dissolvent 4) Dissolver 5) Dissolving agent 6) Resolvent 7) Solvent 8) Universal solvent 1) Alcahest 
Alkahest is a hypothetical universal solvent, having the power to dissolve every other substance, including gold. It was much sought after by alchemists for what they thought would be its invaluable medicinal qualities. ==Ideology== The name is believed to have been invented by Paracelsus from Switzerland, who modeled it on similar words taken fro...
• (n.) The fabled `universal solvent` of the alchemists; a menstruum capable of dissolving all bodies.
Al'ka·hest noun [ Late Latin alchahest , French alcahest , a word that has an Arabic appearance, but was probably arbitrarily formed by Paracelsus.] The fabled 'universal solvent' of the alchemists; a menstruum capable of dissolving all bodies. -- Al`ka*hes'tic 
[n] - hypothetical universal solvent once sought by alchemists
alcahest noun hypothetical universal solvent once sought by alchemists
the universal solvent sought by the alchemists.