Chinese unit of land measurement that varies with location but is commonly 806.65 square yards (0.165 acre, or 666.5 square m). Based on the ch'ih, a unit of length measuring 14.1 inches, the mou has been defined by customs treaty as 920.417 square yards. In ancient China, where units of measure displayed great regional and functional variety, the mou ranged from 1/30 to 1/8 hectare (333.333 to 1,250 square m).
Meaning of MOU in English
Britannica English vocabulary. Английский словарь Британика. 2012