vbl. sb.2 [f. LEACH v.2 + -ING1.] The action of the vb. LEACH2.
a. 900. Kent. Gloss., in Wr.-Wülcker, 56/16. Et inrigatio, and leccinc.
1877. Raymond, Statist. Mines & Mining, 323. The percentage of copper … renders the ore unfit for amalgamation without previous leaching.
attrib. 1850. H. Cutts, Address Windsor Co. Agric. Soc. (U.S.), 12. In China … every thing is subjected to the leaching process, and in the form of liquid decoctions only, applied to the land.
1877. Raymond, Statist. Mines & Mining, 399. The bath may be brought in contact with the ore … by percolation in leaching-tanks.
1884. W. P. Trowbridge, in Harper’s Mag., April, 761/2. This subsoil water, after acting as a leeching agent of a surface, filled to a greater or less extent with organic refuse, is scarcely less foul than sewage itself.
