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mordant by Collins

  1. 1) adjective, sarcastic or caustic
  2. 2) adjective, having the properties of a mordant
  3. 3) adjective, pungent
  4. 4) noun, a substance used before the application of a dye, possessing the ability to fix colours in textiles, leather, etc. See also lake
  5. 5) noun, an acid or other corrosive fluid used to etch lines on a printing plate
  6. 6) verb, to treat (a fabric, yarn, etc) with a mordant

Etymology

C15: from Old French: biting, from mordre to bite, from Latin mordēre


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