Definition of metachromasia in English:


Line breaks: meta|chrom¦asia
Pronunciation: /ˌmɛtəkrə(ʊ)ˈmeɪzɪə


[mass noun] Biology
  • 1The property of certain biological materials of staining a different colour from that of the stain used.
    More 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 colour in the presence of certain biological materials.
    More example sentences
    • Under these conditions PBs appeared light blue, while metachromasia was observed for globoid inclusions that stained purple-blue.



More 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 'colour'.

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