(ˈɑːkənˌsɔː) a state of the southern US: mountainous in the north and west, with the alluvial plain of the Mississippi in the east; has the only diamond mine in the US; the chief US producer of bauxite. Capital: Little Rock. Pop: 2 725 714 (2003 est). Area: 134 537 sq km (51 945 sq miles)Abbreviation: Ark., (with zip code)AR
(ɑːˈkænzəs) a river in the S central US, rising in central Colorado and flowing east and southeast to join the Mississippi in Arkansas. Length: 2335 km (1450 miles)
organized as a U.S. territory 1819 (admitted as a state 1836), named for the Arkansas River, which was named for a Siouan tribe.
The spelling of the term represents a French plural, Arcansas, of a name applied to the Quapaw people who lived on the Arkansas River; their name was also written in early times as Akancea, Acansea, Acansa (Dickinson, 1995). This was not the name used by the Quapaws themselves, however. The term /akansa/ was applied to them by Algonquian speakers; this consists of /a-/, an Algonquian prefix found in the names of ethnic groups, plus /kká:ze, a Siouan term refering to members of the Dhegiha branch of the Siouan family. This stem is also the origin for the name of the Kansa tribe and of the state of Kansas; thus the placenames Arkansas and Kansas indirectly have the same origin. [William Bright, "Native American Placenames of the United States," 2004]