or  Ro*ma*now*sky's stain  also  Ro*ma*nov*sky stain  or  Ro*ma*nov*sky's stain  n :  a stain made from water-soluble eosin, methylene blue, and absolute methanol and used in parasitology
 
Romanowsky, Dimitri Leonidovich (1861-1921), Russian physician. Romanowsky made important studies of the malaria parasite. In an 1891 monograph on the parasitology and treatment of malaria, he introduced the original eosin-methylene blue stain for blood smears and malaria parasites.
 
 
 
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