Synonymer till stainingsubstantiv((histology) the use of a dye to color specimens for microscopic study) staining(the act of spotting or staining something) spotting; maculation; stainingverb(color with a liquid dye or tint) stain; staining(produce or leave stains) stain; staining(make dirty or spotty, as by exposure to air; also used metaphorically) tarnish; stain; maculate; sully; defile; staining(color for microscopic study) stain; staining