secretage en · NOUN
Etymology
From French secrétage, from secréter + -age.
Meanings
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(uncountable) A process in which mercury, or some of its salts, is employed to impart the property of felting to certain kinds of furs.
This defect in the straight filaments he supposed to be removed by secretage, or the application of a solution of nitrate of mercury to the tips of the fur on the skin , which caused these to curl
1836, Andrew Ure, The Cotton Manufacture of Great Britain: