Definition of pathological
- pathological research
- A pathological examination led to the diagnosis.
- pathological changes in the body
- pathological symptoms
- a pathological liar
- pathological fear
He is a pathological liar.
She has a pathological fear of heights.
pathological changes in the body
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pathological.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: extreme in a way that is not normal or that shows an illness or mental problem
medical : relating to or caused by disease
: of or relating to the study of diseases : relating to pathology
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