Definition of "lixivium" [lix•iv•i•um]

• A solution of alkaline salts extracted from wood ashes. (noun)
• Any solution obtained by lixiviation. (noun)

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• "This lixivium, must be put on boiling hot, and the ultramarine stirred well about in it, and then the mixture set to cool."
• "Another method of purifying the ultramarine from the cement may be used, which is the pricking the yolks of eggs with a pin, and moistening the matter to be purified with the soft part that will run out, and working them together in a glass or flint mortar; after which the mixture must be put into the lixivium, and proceeded with as is above directed."
• "The powder being subdued, the clear lixivium must be poured off, and clean water put in its place, which must be repeated till the whole of the salts of the lixivium are washed away. the ultramarine must afterwards be dried, and will be then duly prepared for use."