1. the quality or state of being abnormal; deviation from what is normal or expected
Usage: formal or technical usage; less common than 'abnormality'
2. something that is abnormal; an abnormal thing or condition
Usage: formal or technical usage

Examples

• The doctor noted an abnormity in the patient's blood test results.
• The abnormity of the weather pattern concerned climate scientists.
• Such abnormities in behavior warrant further investigation.
• The structural abnormity was detected during the routine examination.
• Genetic abnormities can sometimes be identified before birth.
• The abnormity of the situation made everyone uncomfortable.