1. Impregnated with, or consisting of, alkaline salts extracted from wood ashes; impregnated with a salt or salts like a lixivium. (Boyle)
2. Of the colour of lye; resembling lye.
3. Having the qualities of alkaline salts extracted from wood ashes.
(Science: chemistry) lixivial salts, salts which are obtained by passing water through ashes, or by pouring it on them.
Origin: L. Lixivius, fr. Lix ashes, lye ashes, lye: cf. F. Lixiviel.