Pronunciation: (wis-kon'sun),[key] —n. 1. a state in the N central United States: a part of the Midwest. 4,705,335; 56,154 sq. mi. (145,440 sq. km). Cap.: Madison. Abbr.: WI (for use with zip code), Wis., Wisc.
2. a river flowing SW from N Wisconsin to the Mississippi. 430 mi. (690 km) long.
3. the fourth stage of the glaciation of North America during the Pleistocene. Cf. Würm.