Gram Stain Definition

grăm
noun
A staining technique used to classify bacteria in which a bacterial specimen is first stained with crystal violet, then treated with an iodine solution, decolorized with alcohol, and counterstained with safranin. Because of differences in cell wall structure, gram-positive bacteria retain the violet stain whereas gram-negative bacteria do not.
American Heritage Medicine
Synonyms:
  • Gram's method
  • Gram's stain
  • Gram's procedure
  • Gram method

Origin of Gram Stain

  • After Hans Christian Joachim Gram (1853–1938), Danish physician

    From American Heritage Dictionary of the English Language, 5th Edition

Gram Stain Sentence Examples

  • Can be difficult to differentiate pleural empyema from pleural effusion in the absence of a positive Gram stain or bacterial culture.

  • The Gram stain is performed on a sediment of the CSF and is positive in at least 60 percent of cases of bacterial meningitis.

  • They take on the red color of the counterstain used in the Gram stain procedure.

  • The bacterium can be grown on chocolate agar or identified by blood cultures or Gram stain of body fluids.

  • The Gram stain procedure allows the identification of purple (gram positive) organisms and red (gram negative) organisms.

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Words Starting With

GGRGRA

Words Ending With

NINAIN

Unscrambles

Gram stain

Words Starting With G and Ending With N

Starts With G & Ends With NStarts With GR & Ends With NStarts With G & Ends With IN

Word Length

10 Letter Words10 Letter Words Starting With G10 Letter Words Ending With N