Lixivial /(?)/

Lix·iv·i·al

Lixivial

a.
  1. Impregnated with, or consisting of, alkaline salts extracted from wood ashes; impregnated with a salt or salts like a lixivium.
  2. Of the color of lye; resembling lye.
  3. Having the qualities of alkaline salts extracted from wood ashes.

Phrases & Compounds
Lixivial salts
salts which are obtained by passing water through ashes, or by pouring it on them.