Definition of "osazone" [osazone]

• Any glycoside of an aldose or 2-ketose formed by reaction with excess of an aryl-hydrazine (noun)

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• "By passage to a common osazone, he established the relation between glucose, fructose and mannose, which he discovered in 1888."
• "The reaction is assumed to be that of osazone formation."
• "After fermenting away the hexoses, the residue was treated with phenylhydrazine and an osazone separated."