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1. (histology) the use of a dye to colour specimens for microscopic study
    
2. The act of spotting or staining something
   - spotting, maculation

1. Colour with a liquid dye or tint
   "Stain this table a beautiful walnut colour"; "people knew how to stain glass a beautiful blue in the middle ages"
    
2. Produce or leave stains
   "Red wine stains the table cloth"
    
3. Make dirty or spotty, as by exposure to air; also used metaphorically
   "The silver was stained by the long exposure to the air";
   - tarnish, maculate, sully, defile
    
4. Colour for microscopic study

Derived forms: stainings

Type of: alter, blob, blot, change, dirtying, dye, dyeing, fleck, modify, soiling, soilure, spot

Encyclopedia: Staining Staining, Lancashire