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Any of various French units of land measurement, especially one used in parts of Canada and the southern United States and equal to about 0.4 hectare (0.85 acre).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
arpent(ˈɑːpənt; French arpɑ̃) or
1. (Units) a former French unit of length equal to 190 feet (approximately 58 metres)
2. (Units) an old French unit of land area equal to about one acre: still used in Quebec and Louisiana
[C16: from Old French, probably from Late Latin arepennis half an acre, of Gaulish origin; related to Middle Irish airchenn unit of land measure]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ar•pent(ˈɑr pənt; Fr. arˈpɑ̃)
n., pl. -pents (-pənts; Fr. -ˈpɑ̃)
an old French unit of area equal to about one acre (0.4 hectare), still used in the province of Quebec and in parts of Louisiana.
[1570–80; < Middle French < Latin arepennis half-acre < Gaulish]
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