Words: Gram-ap-s method Gram method Gram-ap-s procedure Gram-ap-s stain Gram stain
Part of speech: n
Definition: 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