| 1. | sharply caustic or sarcastic, as wit or a speaker; biting. |
| 2. | burning; corrosive. |
| 3. | having the property of fixing colors, as in dyeing. |
| 4. | a substance used in dyeing to fix the coloring matter, esp. a metallic compound, as an oxide or hydroxide, that combines with the organic dye and forms an insoluble colored compound or lake in the fiber. |
| 5. | an adhesive substance for binding gold or silver leaf to a surface. |
| 6. | an acid or other corrosive substance used in etching to eat out the lines, areas, etc. |
| 7. | Music. mordent. |
| 8. | to impregnate or treat with a mordant. |
mordant mor·dant (môr'dnt)
adj.
Serving to fix colors in dyeing. n.
A reagent, such as tannic acid, that fixes dyes to cells, tissues, or other materials. v. mor·dant·ed, mor·dant·ing, mor·dants
To treat with a mordant.