Congo red
noun
Con·go red
| \ ˈkäŋ-(ˌ)gō-
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Definition of Congo red
: an azo dye C32H22N6Na2O6S2 that is red in alkaline and blue in acid solution and that is used especially as an indicator and as a biological stain
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More Definitions for Congo red
Congo red
noun
\ ˌkäŋ-(ˌ)gō-ˈred
\
\
Medical Definition of Congo red
: an azo dye C32H22N6Na2O6S2 that is red in alkaline and blue in acid solution and that is used in a number of diagnostic tests and especially for the detection of amyloidosis since the injected dye tends to be retained by abnormal amyloid deposits