epidemiology

[ep-i-dee-mee-ol-uh-jee, -dem-ee-]
noun
the branch of medicine dealing with the incidence and prevalence of disease in large populations and with detection of the source and cause of epidemics of infectious disease.

Origin:
1870–75; epidemi(c) + -o- + -logy

epidemiological [ep-i-dee-mee-uh-loj-i-kuhl, -dem-ee-] , adjective
epidemiologically, adverb
epidemiologist, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
epidemiology (ˌɛpɪˌdiːmɪˈɒlədʒɪ)
 
n
the branch of medical science concerned with the occurrence, transmission, and control of epidemic diseases
 
epidemiological
 
adj
 
epidemio'logically
 
adv
 
epidemi'ologist
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

epidemiology
study of epidemics, 1873, from Gk. epidemios epidemic (see epidemic) + -logy. Related: Epidemiological; epidemiologist.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

epidemiology ep·i·de·mi·ol·o·gy (ěp'ĭ-dē'mē-ŏl'ə-jē, -děm'ē-)
n.
The branch of medicine that deals with the study of the causes, distribution, and control of disease in populations.


ep'i·de'mi·ol'o·gist n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
epidemiology   (ěp'ĭ-dē'mē-ŏl'ə-jē)  Pronunciation Key 
The scientific study of the causes, distribution, and control of disease in populations.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
There have been epidemiological studies, which show that people who drink green
  tea tend to have less chance of developing cancer.
Canine prostate carcinoma: epidemiological evidence of an increased risk in
  castrated dogs.
No formal epidemiological study was done because the program that included it
  was replaced due to political conflicts.
The reason for this epidemiological poverty is a matter of speculation.
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