an abnormal physical condition resulting from defective genes or developmental deficiencies
retardation sufficient to fall outside the normal range of intelligence
marked strangeness as a consequence of being abnormal
behavior that breaches the rule or etiquette or custom or morality
The state or quality of being abnormal; variation; irregularity.
This word comes from combining the adjective abnormal with the suffix -ity. It originally meant the state or quality of being abnormal.