1. of or relating to the practice of pathology

- pathological laboratory

Similar word(s): pathologic

2. caused by or evidencing a mentally disturbed condition

- a pathological liar

- a pathological urge to succeed

Similar word(s): neurotic, psychoneurotic

3. caused by or altered by or manifesting disease or pathology

- pathologic tissue

- pathological bodily processes

Similar word(s): unhealthy, diseased, morbid, pathologic