Viperoidea
Pronunciation : Vi`per*oi"de*a, Vi`per*oi"des
Part of Speech : n.
Etymology : [NL. See Viper, and - oid.] (Zo?l.)
Definition : Defn: A division of serpents which includes the true vipers of the Old World and the rattlesnakes and moccasin snakes of America; -- called also Viperina.
pl.
Source : Webster's Unabridged Dictionary, 1913