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prevalence

[prev-uh-luh ns] /ˈprɛv ə ləns/
noun
1.
the condition of being prevalent, or widespread:
the prevalence of AIDS in developing countries.
Sometimes, prevalentness.
Related forms
nonprevalence, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for prevalence
n.

1590s, "fact of having mastery," from Middle French prévalence (15c.), from Late Latin praevalentia, from praevalens, present participle of praevalere (see prevalent). Meaning "condition of being widespread or general" is from 1713.

Online Etymology Dictionary, © 2010 Douglas Harper
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prevalence in Medicine

prevalence prev·a·lence (prěv'ə-ləns)
n.
The total number of cases of a disease in a given population at a specific time.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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