Dictionary.com
Thesaurus.com

quinonimine

American  
[kwi-non-uh-meen, -min, -noh-nuh-] / kwɪˈnɒn əˌmin, -mɪn, -ˈnoʊ nə- /

noun

Chemistry.
  1. a colorless, crystalline compound, C 6 H 5 NO, the parent of the indophenol dyes, derived from quinone.


Etymology

Origin of quinonimine

quinone + imine ( def. )