IPA: /ˈbɜːrθreɪt/
KK: /bɜrθreɪt/
The number of live births in a specific area or community over a certain period, usually expressed as the number of births per 1,000 people each year.
The birthrate in the country has decreased over the last decade.
Birthrate is formed from "birth" (from Old English "berthan", meaning to bring forth or give life) and "rate" (from Latin "ratio", meaning a calculation or proportion). The term refers to the proportion of births in a given population over a specific time period.
Think of 'bringing forth' ('birth') and measuring it as a 'proportion' ('rate') to remember that birthrate refers to the number of births in relation to the population.