noun.
The study of the characteristics of human populations, such as size, growth, density, distribution, and vital statistics.
The Century Dictionary and Cyclopedia
noun.
That department of anthropology which relates to vital and social statistics and their application to the comparative study of races and of nations.
the GNU version of the Collaborative International Dictionary of English
noun.
The study of vital statistics, such as births, deaths, marriages, mortality, health, etc., in populations and subgroups of populations.