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English definition of “acre”

acre

noun [C]  /ˈeɪ·kər/ us  
a unit for measuring area, equal to 43,560 square feet or 4047 square meters: They bought half an acre of land to build their house on.
acreage
noun [U]  /ˈeɪ·kər·ɪdʒ/ us  
Forest covers half the acreage.
(Definition of acre from the Cambridge Academic Content Dictionary © Cambridge University Press)
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