
• (p. pr. & vb. n.) of Mordant
Found on
http://thinkexist.com/dictionary/meaning/mordanting/

mordant, mordanting, mordanted, mordants 1. Bitingly sarcastic: mordant satire. 2. Incisive and trenchant. 3. Bitingly painful. 4. Serving to fix colors in dyeing, as with a reagent, such as tannic acid, that fixes dyes to cells, tissues, or textiles or other materials. 5. A corrosive substance; such as, an acid, used in etching.
Found on
http://www.wordinfo.info/words/index/info/view_unit/3346/

Pre-treating leather with any substance save acid or alkali which substantially alters its affinity for dyestuffs. (1)
Found on
https://www.encyclo.co.uk/local/20861
No exact match found.