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English definition of “population”

population

noun [C, + sing/pl verb] uk   /ˌpɒp.jʊˈleɪ.ʃən/ us    /ˌpɑː.pjə-/
B1 all the people living in a particular country, area, or place: Ten percent of the population lived in poverty. In 1992 the population of Cairo was approximately 6,500,000. a growing/shrinking population Throughout the war, there were horrific casualties amongst the civilian populations of both countries. The UN is investigating new methods of population control (= limiting the growth of the number of people). The country is facing a population explosion (= sudden growth in the number of people). B2 all the people or animals of a particular type or group who live in one country, area, or place: There's been a nine percent rise in the prison population (= the number of people in prison). The dolphin population has been decimated by tuna fishing.
(Definition of population from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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