from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The portion of an original liquid that remains after other components have been dissolved by a solvent.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a solution from which some material has been removed by extraction with an immiscible liquid
French raffiner, to refine; see raffinose + -ate2.(American Heritage® Dictionary of the English Language, Fourth Edition)
The metal can be removed from ore through a chemical separation process that leaves a soupy mixture of liquid and chemical byproducts known as "raffinate."