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 According to data from the World Health Organization, the US has the highest maternal mortality rate of all industrialized nations, and the CDC reports that Black women are three times more likely to die during and after childbirth than white women. Glamour, 26 Apr. 2024 Still, the virus remains a cause of concern among health officials, given its particularly high mortality rate of around 50%. Erika Edwards, NBC News, 23 Apr. 2024 The condition has a 100% mortality rate and there is a 33% chance that the baby will die in utero. Jessica Van Egeren, Journal Sentinel, 12 Apr. 2024 Cohen said the focuses in Arkansas should include lowering maternal mortality rates, increasing rural health care access and continuing to work on cultural competency in medicine. Lydia Fletcher, arkansasonline.com, 9 Apr. 2024 In 1999, the natural-cause mortality rate for people ages 25 to 54 in rural areas was only 6% higher than for city dwellers in the same age bracket. Jazmin Orozco Rodriguez, CBS News, 8 Apr. 2024 While the syndrome itself is generally not considered fatal, only a few studies have examined the mortality rate of people who suffer from ME/CFS. Stephen C. George, Discover Magazine, 1 Apr. 2024 Bald eagles can live up to 30 years in the wild, according to the U.S. Fish and Wildlife Service, but chicks can have high mortality rates due to issues with humans, food scarcity or disease. Olivia Lloyd, Miami Herald, 10 Apr. 2024 The case has since grown into a class-action lawsuit that affects all prior, current and future men and women in San Diego County jails, a system that has one of the highest mortality rates in California. Jeff McDonald, San Diego Union-Tribune, 31 Mar. 2024

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 3 May. 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
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!