Definition of Mason–Dixon line in English:

Mason–Dixon line

Syllabification: Ma·son–Dix·on line
Pronunciation: /ˌmāsənˈdiksən ˌlīn
 
/

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 (1728–1786) and Jeremiah Dixon (1733–1779), the English astronomers who surveyed it in 1763–67.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day salmanazar
Pronunciation: ˌsalməˈneɪzə
noun
a wine bottle twelve times the standard size...