gram's stain

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• February 28. 2016 from wordnet.princeton.edu

  Gram's stain — noun — english

  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