fatality rate

noun

plural fatality rates

: the number of deaths from a specific cause

Last year, South Carolina had the nation's third-highest highway fatality rate, with 1,064 people killed in wrecks on the state's roads.

—Joseph S. Stroud

McGuire is a practitioner of what he calls the king of all extreme sports. BASE—an acronym for building, antenna, span (bridge) and earth (cliffs)—jumping has one of the sporting world's highest fatality rates: in its 18-year history, 46 participants have been killed.

—Karl Taro Greenfield

specifically : case fatality rate

Dysentery, in which fatality rates in untreated cases range as high as 50 percent, is especially dangerous to children.

—James C. Riley

Examples of fatality rate in a Sentence

Recent Examples on the Web

Shaina Montiel says her mother stills cries thinking about her harrowing experience with hantavirus at age 5, which, according to the CDC, can have a fatality rate up to 38%, depending on the type of syndrome caused by it. —Natalie Neysa Alund, USA Today, 12 May 2026

Hantavirus can have a fatality rate of around 40%-50%, the WHO says, and the elderly are particularly at risk. —Phil Helsel, NBC news, 10 May 2026

The fatality rate is 30 to 40%. —Jason Green, Mercury News, 9 May 2026

The virus has a high fatality rate of up to 50 percent in the Americas. —Michael Cappetta, Travel + Leisure, 8 May 2026

Word History

First Known Use

1866, in the meaning defined above

Rhymes for fatality rate

• borosilicate
• decontaminate
• deoxycholate
• deteriorate
• differentiate
• diisocyanate
• dinoflagellate
• excommunicate
• incapacitate
• insubordinate
• intercorporate
• interpenetrate

Medical Definition

fatality rate

noun

: the number of deaths from a specific cause

… the inclusion of air bags and other design improvements in vehicles, the use of seat belts and even the increasing maturity of the driving population have combined to lower the fatality rate on U. S. highways by 29 percent since 1987.

—Stefan Thomke et al., Scientific American

specifically : case fatality rate

Dysentery, in which fatality rates in untreated cases range as high as 50 percent, is especially dangerous to children.

—James C. Riley, The American Historical Review