Gram's method Hear it!

Gram's method definition

Gram's method (gramz)

a method of staining bacteria for the purpose of classification, involving treatment with crystal violet, an iodine solution, and alcohol: the violet stain is retained by Gram-positive bacteria or lost by Gram-negative bacteria when the alcohol is applied

Etymology: after Hans C. J. Gram (1853-1938), Dan physician

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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