Definition of census noun from the Oxford Advanced American Dictionary

 

census

 noun
noun
NAmE//ˈsɛnsəs//
 
(pl. censuses)
 
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the process of officially counting something, especially a country's population, and recording various facts; the results of this process to take a census According to the 2008 census, there are 15.5 million Asian Americans living in the United States.
See the Oxford Advanced Learner's Dictionary entry: census