\Lix*iv"i*al\, a. [L. lixivius, fr. lix ashes, lye
ashes, lye: cf. F. lixiviel.]
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 color of lye; resembling lye.
3. Having the qualities of alkaline salts extracted from wood
   ashes.
{Lixivial salts} (Old Chem.), salts which are obtained by
   passing water through ashes, or by pouring it on them.