noun, plural pa·thol·o·gies.
  1. the science or the study of the origin, nature, and course of diseases.
  2. the conditions and processes of a disease.
  3. any deviation from a healthy, normal, or efficient condition.

Origin of pathology

1590–1600; earlier pathologia < Latin < Greek pathología. See patho-, -logy
Related formspa·thol·o·gist, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pathologist

Contemporary Examples of pathologist

Historical Examples of pathologist

British Dictionary definitions for pathologist


noun plural -gies
  1. the branch of medicine concerned with the cause, origin, and nature of disease, including the changes occurring as a result of disease
  2. the manifestations of disease, esp changes occurring in tissues or organs
  3. any variant or deviant condition from normal
Derived Formspathologist, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for pathologist

1640s, from pathology + -ist.



"science of diseases," 1610s, from French pathologie (16c.), from medical Latin pathologia "study of disease," from Greek pathos "suffering" (see pathos) + -logia "study" (see -logy). In reference to the study of abnormal mental conditions from 1842. Ancient Greek pathologia was "study of the passions;" the Greek word for "science of diseases" was pathologike ("pathologics").

Online Etymology Dictionary, © 2010 Douglas Harper

pathologist in Medicine


  1. A specialist in pathology who practices chiefly in the laboratory as a consultant to clinical colleagues.


  1. The medical science concerned with all aspects of disease with an emphasis on the essential nature, causes, and development of abnormal conditions, as well as with the structural and functional changes that result from disease processes.
  2. The anatomical or functional manifestations of a disease.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

pathologist in Science


  1. The scientific study of disease and its causes, processes, and effects.
  2. The physical and mental abnormalities that result from disease or trauma.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

pathologist in Culture



A branch of medicine that explores the nature and cause of disease. Pathology also involves the study of bodily changes that occur as the result of disease.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.