mortality rate

noun

plural mortality rates
: the ratio between deaths and individuals in a specified population and during a particular time period : the incidence of deaths in a given population during a defined time period (such as one year) that is typically expressed per 1000 or 100,000 individuals : death rate
an annual mortality rate of 15 deaths per 1000 people

Note: A crude mortality rate does not distinguish between specific causes of death or groups of individuals and measures the incidence of all deaths in a population during a given time period. More specific mortality rates are based on narrower categories of individuals or causes of death.

an infant mortality rate of 9 deaths per 1000 live births
mortality rates of lung cancer patients
infectious disease mortality rates

Examples of mortality rate in a Sentence

Recent Examples on the Web Low-income countries predictably had the worst mortality rate. Elizabeth Rayne, Ars Technica, 4 Feb. 2024 With this historic advance, Golden State becomes the first state to expand Medicaid to cover all low-income residents, who usually have the highest mortality rates. Joe Mathews, The Mercury News, 13 Jan. 2024 In a report published in the journal Public Health Reports, officials with the San Francisco Department of Public Health, along with co-authors from UC San Francisco and UC Berkeley, calculated the excess all-cause mortality rate in San Francisco in 2020, as well as statewide. Rong-Gong Lin Ii, Los Angeles Times, 27 Nov. 2023 Now in Louisiana—which has the highest maternal mortality rate in the United States, and where homicide is the leading cause of death for pregnant women—women are being forced to carry fetuses without skulls to term. Essence, 10 Nov. 2023 Black infants have the highest mortality rate in the United States, rising slightly last year to 10.86 deaths per 1,000 live births, from 10.55 deaths per 1,000 live births in 2021, an increase that was not statistically significant. Compiled By Democrat-Gazette Staff From Wire Reports, Arkansas Online, 2 Nov. 2023 The maternal mortality rate for Black women was 69.9 deaths per 100,000 live births, which is 2.6 times the rate for their white counterparts. Theara Coleman, theweek, 31 Jan. 2024 The disease has remained widespread in sub-Saharan Africa, but did experience notable declines in incidence and mortality rates in the 2000s following a multibillion-dollar health campaign led by Western governments and international nonprofits. Brady Dennis, Washington Post, 30 Nov. 2023 Your state had one of the highest maternal mortality rates in the country according to the CDC, up until about 2021. CBS News, 21 Jan. 2024 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mortality rate.' 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

1855, in the meaning defined above

Time Traveler
The first known use of mortality rate was in 1855

Dictionary Entries Near mortality rate

Cite this Entry

“Mortality rate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mortality%20rate. Accessed 25 Feb. 2024.

Medical Definition

mortality rate

noun
: the ratio between deaths and individuals in a specified population and during a particular time period : the incidence of deaths in a given population during a defined time period (such as one year) that is typically expressed per 1000 or 100,000 individuals : death rate
an annual mortality rate of 15 deaths per 1000 people

Note: A crude mortality rate does not distinguish between specific causes of death or groups of individuals and measures the incidence of all deaths in a population during a given time period. More specific mortality rates are based on narrower categories of individuals or causes of death.

mortality rates of liver cancer patients
an infant mortality rate of 9 deaths per 1000 live births
Last Updated: - Updated example sentences
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