Definition of metachromasia in English:

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Pronunciation: /ˌmedəkrōˈmāZH(ē)ə/
(also metachromasy /-ˈkrōməsē/)


1The property of certain biological materials of staining a different color from that of the stain used.
Example sentences
  • In these cases, metachromasy is an indication of dimerization and polymerization of the adsorbed dyes.
  • The metachromasy was found to be independent of phase transition temperature of vesicles.
  • The change in color of a dye which results from metachromasy is not due to a change in pH of an aqueous solution containing it.
1.1The property of certain stains of changing color in the presence of certain biological materials.
Example sentences
  • Under these conditions PBs appeared light blue, while metachromasia was observed for globoid inclusions that stained purple-blue.



Pronunciation: /-krōˈmatik/
Example sentences
  • Fragments of metachromatic chondromyxoid extracellular material contained cells that were reminiscent of chondrocytes.
  • These include the metachromatic stains or enzymatic stains.
  • The classic leukodystrophies include adrenoleukodystrophy, Krabbe's globoid cell, and metachromatic leukodystrophy, and a few other less well known entities.


Early 20th century: modern Latin, from meta- (expressing change) + Greek khrōma 'color'.

For editors and proofreaders

Syllabification: met·a·chro·ma·sia

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