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The original line extended from the southeast corner of the colony of Pennsylvania 233 miles west and 82 miles south.
A line marking the boundary between the colonies of Pennsylvania and Maryland, established between 1763 and 1767 by the British surveyors Charles Mason (1730-1787) and Jeremiah Dixon (1733-1779). It was regarded as the division between free and slave states before the Civil War.
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.
Mason-Dixon Line(ˈmeɪsə n ˈdɪksən) or
Mason and Dixon Line
(Human Geography) the state boundary between Maryland and Pennsylvania: surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon; popularly regarded as the dividing line between North and South, esp between the free and the slave states before the American Civil War
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
or Ma′son and Dix′on line`,
the boundary between Pennsylvania and Maryland surveyed (1763–67) by Charles Mason and Jeremiah Dixon, regarded as separating North from South.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||Mason-Dixon line - the boundary between Maryland and Pennsylvania; symbolic dividing line between North and South before the American Civil War|
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