Definition of demography noun from the Oxford Advanced Learner's Dictionary

 

demography

 noun
noun
BrE BrE//ˈmɒɡrəfi//
 
; NAmE NAmE//ˈmɑːɡrəfi//
 
[uncountable]
 
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the changing number of births, deaths, diseases, etc. in a community over a period of time; the scientific study of these changes the social demography of Africa Word Origin late 19th cent.: from Greek dēmos ‘the people’ + -graphy.
See the Oxford Advanced American Dictionary entry: demography