pathology

noun

pa·​thol·​o·​gy pə-ˈthä-lə-jē How to pronounce pathology (audio)
plural pathologies
1
: the study of the essential nature of diseases and especially of the structural and functional changes produced by them
studied plant pathology
2
: something abnormal:
a
: the structural and functional deviations from the normal that constitute disease or characterize a particular disease
the pathology of pneumonia
b
: deviation from propriety or from an assumed normal state of something nonliving or nonmaterial
the pathology of wine
c
: deviation giving rise to social ills
connections between these pathologies … and crimeWendy Kaminer
social pathology

Examples of pathology in a Sentence

the pathology of lung diseases
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The results from the forensic and pathology tests could take anywhere between one to four months to come back. Bryan Llenas, FOXNews.com, 26 Mar. 2025 His thesis, which has been supported by a good amount of research, was that social pathologies including violent crime and mental illness could be tied to lead, and their decline in recent decades to measures such as a ban on leaded gas. Michael Hiltzik, Los Angeles Times, 11 Mar. 2025 The elemental dark forces informing so much of Lynch’s work went far beyond fire, and icy pathology. Michael Phillips, Chicago Tribune, 17 Jan. 2025 This stark contrast between her biological pathology and her cognitive condition is now prompting scientists to rethink the relationship between neuropathology and cognitive decline. Thomas G. Moukawsher, Newsweek, 4 Mar. 2025 See All Example Sentences for pathology

Word History

Etymology

borrowed from Middle French & New Latin; Middle French pathologie, borrowed from New Latin pathologia "study of the emotions, study of diseases," from patho- patho- + -logia -logy

Note: Probably formed on the basis of New Latin pathologicus (see pathological). In the sense "study of the emotions," perhaps directly from Greek pathología "study of the passions," attested in Greek-Latin glossaries.

First Known Use

1611, in the meaning defined at sense 1

Time Traveler
The first known use of pathology was in 1611

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Cite this Entry

“Pathology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pathology. Accessed 1 Apr. 2025.

Kids Definition

pathology

noun
pa·​thol·​o·​gy pə-ˈthäl-ə-jē How to pronounce pathology (audio)
plural pathologies
1
: the study of diseases and especially of the changes in the body produced by them
2
: something abnormal
especially : the disorders in structure and function that occur in a particular disease

Medical Definition

pathology

noun
pa·​thol·​o·​gy -jē How to pronounce pathology (audio)
plural pathologies
1
: the study of the essential nature of diseases and especially of the structural and functional changes produced by them
2
: the anatomic and physiological deviations from the normal that constitute disease or characterize a particular disease
3
: a treatise on or compilation of abnormalities
a new pathology of the eye

More from Merriam-Webster on pathology

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