Gram stain
pronunciation
How to pronounce Gram stain in British English:
UK 
How to pronounce Gram stain in American English:
US
-
- 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