pathologist

n. expert on pathology, one who researches diseases and their effects; one who performs autopsies, one who examines corpses to determine the cause of death

Pathologist redirects here. For other uses of the terms pathology or pathological, see pathology (disambiguation).Pathology is the study and diagnosis of disease through examination of organs, tissues, cells and bodily fluids. The term encompasses both the medical specialty which uses tissues and body fluids to obtain clinically useful information, as well as the related scientific study of disease processes.
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Noun
1. a doctor who specializes in medical diagnosis
(synonym) diagnostician
(hypernym) specialist, medical specialist
(hyponym) etiologist, aetiologist

(n.)
One skilled in pathology; an investigator in pathology; as, the pathologist of a hospital, whose duty it is to determine the causes of the diseases.
  

A doctor who identifies diseases by studying cells and tissues under a microscope.