Gram's stain

Noun

1.

Gram's stain - 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 Synonyms: Gram method, Gram stain, Gram's method, Gram's procedure

Gram method, Gram stain, Gram's method, Gram's procedure, staining