noun phthal·o·nitrile \¦thalō+\

Definition of phthalonitrile

  1. :  a crystalline compound C6H4(CN)2 made usually by heating phthalic anhydride and ammonia under dehydrating conditions and used chiefly in making phthalocyanines

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of phthalonitrile

International Scientific Vocabulary phthal- + nitrile

Seen and Heard

What made you want to look up phthalonitrile? Please tell us where you read or heard it (including the quote, if possible).


to cast off or become cast off

Get Word of the Day daily email!