venenosityvenenosity means quality of being venomous or poisonous. Lexicurio rates it Sui generis — a strength score of 87 out of 100.EtymologyFrom Middle English venenosite, venenositee, venenoste, venenouste, from Middle French venenosite or Medieval Latin venēnōsitas. By surface analysis, venene + -osity.nounQuality of being venomous or poisonous.