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
   - tarnish, maculate, sully, defile 
4. Colour for microscopic study

Derived forms: stainings

See also: stainer

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

Encyclopedia: Stain

• starship
• start
• start out
• start over
• start-off
• starter
• starter motor
• starting
• starting block
• starting buffer
• starting gate
• starting handle
• starting line
• starting motor
• starting pitcher
• starting point
• starting post
• starting signal
• starting stall
• starting time
• startle
• startle reaction
• startle reflex
• startle response
• startled