In meteorology, a deviation of the weather or climate from the conditions normally expected at a particular time and place; a deviation from the normal Compare anomaly
behavior that breaches the rule or etiquette or custom or morality marked strangeness as a consequence of being abnormal retardation sufficient to fall outside the normal range of intelligence an abnormal condition
An abnormality in something, especially in a person's body or behaviour, is an unusual part or feature of it that may be worrying or dangerous. Further scans are required to confirm the diagnosis of an abnormality. abnormalities an abnormal feature, especially something that is wrong with part of someone's body