Source : Webster's Revised Unabridged Dictionary (1913)

Viridine \Vir"i*dine\, n. [L. viridis green.] (Chem.)
   A greenish, oily, nitrogenous hydrocarbon, {C12H19N7},
   obtained from coal tar, and probably consisting of a mixture
   of several metameric compounds which are higher derivatives
   of the base pyridine.