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stain noun

  /steɪn/
  • A discolored spot or area caused by spillage or other contact with certain fluids or substances.
mancha, mácula, chorretada, chorretón, chorreón, churretón
  • A blemish on one's character or reputation.
mancilla, tacha
  • A substance used to soak into a surface and colour it.
colorante
  • A reagent or dye used to stain microscope specimens so as to make some structures visible.
contraste

stain verb

  /steɪn/
  • (transitive) To discolor, as by spilling or other contact with a fluid or substance.
  • (intransitive) To become stained; to take a stain.
  • To cause to seem inferior or soiled by comparison.
manchar, percudir
  • (transitive, cytology, histology) To treat (a microscopic specimen) with a dye, especially one that dyes specific features
colorear
  • To coat a surface with a stain
entintar
  • To taint or tarnish someone's character or reputation
mancillar

stained

manchado

staining

tinción
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