staining

Other forms: stainings

Definitions of staining

1. noun

   the act of spotting or staining something
   synonyms: maculation, spotting

   type of:

   dirtying, soiling, soilure

   the act of soiling something
2. noun

   (histology) the use of a dye to color specimens for microscopic study
   types:

   Gram method, Gram stain, Gram's method, Gram's procedure, Gram's stain

   a staining technique used to classify bacteria; bacteria are stained with gentian violet and then treated with Gram's solution; after being decolorized with alcohol and treated with safranine and washed in water, those that retain the gentian violet are Gram-positive and those that do not retain it are Gram-negative

   type of:

   dyeing

   the use of dye to change the color of something permanently