mordant (adj)
1. Biting; caustic; sarcastic; keen; severe.
2. Serving to fix colors when dyeing.
mordant (n)
1. Any substance used to facilitate the fixing of a dye to a fibre; usually a metallic compound which reacts with the dye using chelation.
mordant (vt)
1. To subject to the action of, or imbue with, a mordant.
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