n :  any of a class of compounds containing the grouping >C=NNHR formed by the action of hydrazine or a substituted hydrazine (as phenylhydrazine) on a compound containing a carbonyl group (as an aldehyde or ketone) .
 
 
 
Similar sounding terms:  hy·dra·zine  hy·dro·zo·an  ty·ro·sine 
 
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