- a state in the N central United States: a part of the Midwest. 77,047 sq. mi. (199,550 sq. km). Capital: Pierre. Abbreviation: SD (for use with zip code), S. Dak.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- of or relating to South Dakota or its inhabitants
- a native or inhabitant of South Dakota
- a state of the western US: lies mostly in the Great Plains; the chief US producer of gold and beryl. Capital: Pierre. Pop: 764 309 (2003 est). Area: 196 723 sq km (75 955 sq miles)Abbreviation: S. Dak, (with zip code) SD
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