Siouan

[ soo-uh n ]
/ ˈsu ən /

noun

an American Indian language family formerly widespread from Saskatchewan to the lower Mississippi, also found in the Virginia and Carolina piedmont, and including Catawba, Crow, Dakota, Hidatsa, Mandan, Osage, and Winnebago.
a member of one of the Siouan-speaking peoples.

adjective

of or relating to the Sioux or the Siouan languages.

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Origin of Siouan

An Americanism dating back to 1885–90; Sioux + -an
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for siouan

British Dictionary definitions for siouan

Siouan
/ (ˈsuːən) /

noun

a family of North American Indian languages including Sioux, probably related to Iroquoian

adjective

of or relating to the Sioux peoples or languages
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012