leaching

noun2

1. •
   The process by which something is leached.

   • The leachings were performed in a controlled atmosphere chamber in four different steps […] — 2012
2. •
   Liquid that leaches.

   • One set of plants was watered with distilled water, while to the other set was added in addition small amounts of leachings, containing only a trace of nitrogen, from a cultivated field.