abnormality
/ˌæbnɔːˈmæləti/noun
(pl. -ies)
1- an abnormal feature, characteristic, or occurrence, typically in a medical context（尤指医学上的）异常（特征、特性或情况）：
a chromosome abnormality.
染色体异常。
1.1
- mass noun the quality or state of being abnormal异常, 反常。