Congo red
noun
Con·go red ˈkäŋ-(ˌ)gō- 
: 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
Word History
Etymology
Congo, territory in Africa
First Known Use
1885, in the meaning defined above
Medical Definition
Congo red
noun
ˌkäŋ-(ˌ)gō-ˈred
: 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
- microtuses
- microtusses
- microtylote
- microtype
- microtypical
- microvascular
- microvasculature
- microvasculatures
- microvillar
- microvilli
- microvillous
- microvillus
- microvolt
- microvolts
- microwatt
- microwatts
- microwavable
- microwave
- microwave background
- microwave oven
- microwave ovens
- microwave relay
- microwave spectrum
- microwaveable
- microwaved