Sudan(redirected from Republic of the Sudan)
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Related to Republic of the Sudan: South Sudan
a group of azo compounds used as biological stains for fats.
Sudan/Su·dan/ (soo-dan´) a group of azo compounds used as biological stains for fats.
Sudan black B a black, fat-soluble diazo dye, used as a stain for fats.
One of a number of related biological stains for which fats have a special affinity, including Sudan II, Sudan III (G), Sudan IV, and Sudan R.
a group of lipophilic azo compounds used as biological stains for fats, e.g. Sudan III, Sudan IV.
Sudan stain test
a useful screening test for steatorrhea. Feces mixed with Sudan III or Sudan IV stain are examined microscopically for detection of undigested (direct test) or digested (indirect test) fats that appear as red-stained globules.