— Missourian , adj. , n.
/mi zoor"ee, -zoor"euh/ , n. , pl. Missouris , ( esp. collectively ) Missouri for 3.
1. a state in the central United States. 4,917,444; 69,674 sq. mi. (180,455 sq. km). Cap.: Jefferson City. Abbr.: MO (for use with zip code), Mo.
2. a river flowing from SW Montana into the Mississippi N of St. Louis, Mo. 2723 mi. (4382 km) long.
3. a member of a North American Indian tribe belonging to the Siouan linguistic stock, located on the Missouri River in early historic times and now extinct as a tribe.
4. from Missouri , Informal. unwilling to accept something without proof; skeptical: I'm from Missouri - you'll have to show me that you're right.