incidence

noun

in·​ci·​dence ˈin(t)-sə-dən(t)s How to pronounce incidence (audio)
-ˌden(t)s
1
a
: rate of occurrence or influence
a high incidence of crime
b
: an act or the fact or manner of falling upon or affecting : occurrence
2
b
: the arrival of something (such as a projectile or a ray of light) at a surface

Did you know?

The words incident, incidence, and instance may seem similar (and, in fact, incident and incidence are closely related), but they are not used identically. In current use, incidence usually means "rate of occurrence" and is often qualified in some way ("a high incidence of diabetes"). Incident usually refers to a particular event, often something unusual or unpleasant ("many such incidents go unreported"). Instance suggests a particular occurrence that is offered as an example ("another instance of bureaucratic bumbling"); it can also be synonymous with case ("many instances in which the wrong form was submitted"). The plural incidences sometimes occurs in such contexts as "several recent incidences of crime," but this use is often criticized as incorrect.

Examples of incidence in a Sentence

an increased incidence of diabetes a high incidence of criminal behavior
Recent Examples on the Web In another paper, from 2012, researchers conducted a meta-analysis of seven studies that compared duration of time spent outdoors with myopia incidence. Andrew Herbert, Discover Magazine, 27 Apr. 2024 Sadly, because of habitat destruction and a high incidence of road collisions, the species is facing extinction. Elizabeth Warkentin, Travel + Leisure, 27 Apr. 2024 The most common cancer in the world The new report includes global data on cancer incidence and death from the Global Cancer Observatory, a World Health Organization database. Jacqueline Howard, CNN, 4 Apr. 2024 Recently, there has been a concerning increase in the incidence of colorectal cancer among individuals below the age of 50 over the last few decades. Dominique Fluker, Essence, 22 Mar. 2024 The high incidence of cancer stems from a mix of environmental and socioeconomic factors, like high levels of pollution, as well as lifestyle and dietary preferences. Astha Rajvanshi, TIME, 10 Apr. 2024 There is no data that indicates a biological reason for why young Black male athletes have a higher incidence of sudden cardiac arrest and death, Kim and Drezner say. Amanda Sealy, CNN, 7 Apr. 2024 However, the incidence of property crime is much higher, with about 2,223 crimes committed per 100,000 people, according to U.S. News. Nollyanne Delacruz, The Mercury News, 6 Apr. 2024 Bacterial pneumonia caused by S. pneumoniae and Legionella species has a high incidence of complications. Tanya Feke, Verywell Health, 4 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'incidence.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1626, in the meaning defined at sense 2a

Time Traveler
The first known use of incidence was in 1626

Dictionary Entries Near incidence

Cite this Entry

“Incidence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/incidence. Accessed 3 May. 2024.

Kids Definition

incidence

noun
in·​ci·​dence ˈin(t)-səd-ən(t)s How to pronounce incidence (audio)
-sə-ˌden(t)s
1
2
: rate of occurrence
a high incidence of illness

Medical Definition

incidence

noun
1
b
: the arrival of something (as a ray of light) at a surface
2
a
: an act or the fact or manner of occurring or affecting
diseases of domestic incidenceScience
b
: rate of occurrence or influence
especially : the rate of occurrence of new cases of a particular disease in a population being studied compare prevalence
Last Updated: - Updated example sentences
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