Definition of Mason–Dixon Line in English:

Mason–Dixon Line

Line breaks: Mason–Dixon Line
Pronunciation: /meɪs(ə)nˈdɪks(ə)n
 
/

noun

(In the US) the boundary between Maryland and Pennsylvania, taken as the northern limit of the slave-owning states before the abolition of slavery.

Origin

named after Charles Mason and Jeremiah Dixon, the 18th-century English astronomers who surveyed it in 1763–7.

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