n :  any of several deep brown solutions of iodine and potassium iodide in water or alcohol that are used in medicine (as for the internal administration of iodine) and as microscopic stains - called also Lugol's iodine , Lugol's iodine solution 
 
Lugol, Jean Guillaume Auguste (1786-1851), French physician. Lugol did research on skin diseases, scrofula, and the therapeutic use of iodine. He introduced Lugol's solution for the treatment of tubercular conditions, particularly scrofula, in 1829.
 
 
 
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