Noun
the ratio of live births in an area to the population of that area; expressed per 1000 population per year
Source: WordNetCDC Bottom of this page http://www.cdc.gov/nchs/products/vsus.htm "Vital Statistics of the United States, 2003, Volume I, Natality", Table 1-1 "Live births, birth rates, and fertility rates, by race: United States, 1909–2003." Source: Internet