Definition of phenylhydrazone in US English:

phenylhydrazone

noun

Chemistry
  • Any of a class of compounds formed by condensation of an aldehyde or ketone with phenylhydrazine, which are typically crystalline solids and are used to characterize the parent aldehyde or ketone.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. After German Phenylhydrazon.