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toluidine blue Syllabification: to·lu·i·dine blue
Pronunciation: /təˌlo͞oədēn ˈblo͞o/

Definition of toluidine blue in English:


A synthetic blue dye used chiefly as a stain in biology.
Example sentences
  • Specimens were stained with toluidine blue and basic fuchsin.
  • The matrix or ground substance of cartilage is strongly basophilic and stains metachromatically with toluidine blue and other similar basic dyes.
  • Inactive DNA is readily stained with hematoxylin, toluidine blue, and other similar basic dyes.


Late 19th century: toluidine from toluene + -ide + -ine4.

Definition of toluidine blue in:

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