/moɚˈtæləti/ noun, pl -ties
1 [noncount] : the quality or state of being a person or thing that is alive and therefore certain to die : the quality or state of being mortal
The news of her cousin's death reminded her of her own mortality. [=reminded her that she would also die some day]
— opposite ↑immortality
[count]
cancer mortalities [=deaths caused by cancer]
[noncount]
a leading cause of mortality
3 [noncount] : the number of deaths that occur in a particular time or place
a decrease in cancer mortality [=a decrease in the number of people dying from cancer]
The government is trying to reduce infant mortality. = The government is trying to reduce the mortality rate among infants. [=trying to reduce the number of infants who die each year]
Useful english dictionary. 2012.