pyrroloquinolinequinone

/P IH1 R AH0 L AH0 K W AH0 N OW0 L IH1 N AH0 K W AH0 N OW1 N IY0/
noun
  1. 1

    (organic chemistry) Any quinone derived from a pyrroloquinoline; the third known redox cofactor in bacteria, after nicotinamide and flavin.