D defs.my
Entry 1 sense Webster, 1913

demography

/(dē̇*mŏg"rȧfy̆)/ · de·mog·ra·phy · IPA /dɪˈmɒɡɹəfi/
01 n. The study of vital statistics, such as births, deaths, marriages, mortality, health, etc., in populations and subgroups of populations.
  1. 1.
    The study of vital statistics, such as births, deaths, marriages, mortality, health, etc., in populations and subgroups of populations.