Definition of "staining" [staining]

• Present participle of stain. (verb)

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• "Our comprehension of Peckitt's manuscript treatise on glass painting and staining is enhanced by the existence of objects that were probably colored using the techniques he describes in that work."
• "I only want to mention that he had moreover already given a significant development to techniques in staining and microscopic investigation as well as in the field of experiment in his earliest work."
• "Such revolutionary staining, which is still in use nowadays and is named after him (Golgi staining or Golgi impregnation) impregnates a limited number of neurons at random"