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metachromasia

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

Definition of metachromasia in English:

noun

[mass noun] Biology
1The property of certain biological materials of staining a different colour 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 colour 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.

Origin

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

Derivatives

metachromatic

1
adjective
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.

Definition of metachromasia in:

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