See Also: viologen(dictionary)
benzyl viologen(medicine)
hydroxycarboxylate-viologen-oxidoreductase(medicine)
NADH-methyl viologen reductase(medicine)

viologen (iou)



viologen noun. M20.
[from VIOLET noun + -O- + -GEN.]
Chemistry. Any of a series of salts of heteroaromatic cations of the formula (C5H4NR)22+, which are used as redox indicators.