lixiviate (v.)

"form into lye," 1758, from past participle stem of Modern Latin lixiviare, from Latin lixivium, neuter of lixivius "made into lye," from lix "ashes, lye," from PIE root *wleik- "to flow, run" (see liquid (adj.)). Related: Lixivial (1640s); lixivation (1717, earlier in French).