What is "semicarbazone"

n. (context organic chemistry English) The reaction product of an aldehyde or ketone with semicarbazide; they have the general formula R₁R₂C=N-NH-CO-NH₂

In organic chemistry, a semicarbazone is a derivative of imines formed by a condensation reaction between a ketone or aldehyde and semicarbazide. They are classified as imine derivatives because they are formed from the reaction of an aldehyde or ketone with the terminal -NH group of semicarbazide, which behaves very similarly to primary amines.