Gram's method

[ gramz ]

noun

, (sometimes lowercase)

1. a method of staining and distinguishing bacteria, in which a fixed bacterial smear is stained with crystal violet, treated with Gram's solution, decolorized with alcohol, counterstained with safranine, and washed with water.

Gram's method

noun

1. bacteriol a staining technique used to classify bacteria, based on their ability to retain or lose a violet colour, produced by crystal violet and iodine, after treatment with a decolorizing agent See also Gram-negative Gram-positive

Word History and Origins

Origin of Gram's method¹

Named after Hans C. J. Gram (1853–1938), Danish bacteriologist

Word History and Origins

Origin of Gram's method¹

C19: named after Hans Christian Joachim Gram (1853–1938), Danish physician