indophenin

noun

in·​do·​phe·​nin

ˌindəˈfēnə̇n,

ə̇nˈdäfənə̇n

: a blue crystalline compound C₂₄H₁₄N₂O₂S₂ formed by reaction of thiophene with isatin and sulfuric acid and used as a color test for the presence of thiophene in technical benzene

Word History

Etymology

International Scientific Vocabulary ind- entry 2 + phene + -in; from a belief that it was a derivative of benzene; originally formed in German

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.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!