The property of being toxic (poisonous).
Toxicity also refers to the severity of adverse effects or illness produced by a toxin, a poison, or a drug overdose.
The ability to cause ill effects. Poisoning.
n. the degree to which a substance is poisonous. See also LD50.
OXYGEN toxicity in human lungs causes an acute OEDEMA followed by ?brosis and PULMONARY HYPERTENSION. In the neonate, retrolental ?broplasia occurs and centralnervous-system damage may result in the infant having ?ts. Several factors are involved in toxicity and there is no absolute relationship to time or concentration, although inspired concentrations of under 50 per cent are probably safe for long periods.... oxygen toxicity