Skip to Content


Pronunciation: met'a-kro-ma'ze-a


  1. The condition in which a cell or tissue component takes on a color different from the dye solution with which it is stained.
  2. A change in the characteristic color of certain basic thiazine dyes, such as toluidine blue, when the dye molecules are bound in proximate array to tissue polyanionic polymers, such as glycosaminoglycans.

Synonym(s): metachromatism2

[meta- + G. chroma, color]

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.