1. in a way that relates to or is caused by disease or abnormal physical or mental condition
Usage: medical/clinical context
2. in a compulsive or obsessive manner that is extreme and difficult to control
Usage: informal usage

Examples

• The patient's tissue samples were pathologically examined under a microscope.
• He is pathologically afraid of germs and washes his hands dozens of times daily.
• The tumor was pathologically confirmed to be benign.
• She has a pathologically competitive nature that affects her relationships.
• The doctor noted pathologically elevated levels of the enzyme in the blood test.
• His pathological lying made it impossible to trust anything he said.