The Collaborative International Dictionary of English v.0.48:

Lixiviate \Lix*iv"i*ate\, Lixivited \Lix*iv"i*`ted\, a. [From
   Lixivium.]
   1. Of or pertaining to lye or lixivium; of the quality of
      alkaline salts.
      [1913 Webster]

   2. Impregnated with salts from wood ashes. --Boyle.
      [1913 Webster]