English noun: Gram stain | |||
1. | Gram stain (act) 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's method, Gram's procedure, Gram's stain | ||
Broader (hypernym) | staining | ||