Gram method

Từ điển Oxford Learners Wordfinder Dictionary

noun

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
• Syn:
Gram's method, Gram's procedure, Gram's stain, Gram stain
• Hypernyms:
staining