toxicity       
noun [ U ]  medical specialized uk/tɒkˈsɪs.ɪ.ti/ us/taːkˈsis.ə.t̬i/
 毒性
the level of poison contained in a drug, or the ability of a drug to poison the body
  The patient displays signs of hypothyroidism due to drug toxicity. 因为药物的毒性,患者出现了甲状腺功能衰退症状。 
 Tests of the chemical have shown that it has a high level of toxicity. 对该化学品的检测表明,它的毒性很大。 
 The toxicity of the drug severely limits its use. 这种药品的毒性极大地限制了它的使用。