Definition of naphthalimide in US English:

naphthalimide

noun

Chemistry
  • A compound containing an imide group \\\NR (R being an alkyl or other substituent) bridging the side chains of naphthalic acid, the C—NR bonds taking the place of the C—OH bonds of the acid.

Origin

1970s; earliest use found in Environmental Quality & Safety. From naphthal- + imide.