lixivial

from The Century Dictionary.

• Obtained by lixiviation; impregnated with alkaline matter extracted from woodashes.
• Containing or consisting of salts so extracted.
• Of the color of lye; resembling lye.
• Having the qualities of alkaline salts extracted from wood-ashes.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Impregnated with, or consisting of, alkaline salts extracted from wood ashes; impregnated with a salt or salts like a lixivium.
• adjective Of the color of lye; resembling lye.
• adjective Having the qualities of alkaline salts extracted from wood ashes.
• adjective (Old Chem.) salts which are obtained by passing water through ashes, or by pouring it on them.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Impregnated with, or consisting of, alkaline salts extracted from wood ashes; impregnated with a salt or salts like a lixivium.
• adjective Having the qualities of alkaline salts extracted from wood ashes.
• adjective Of the colour of lye; resembling lye.