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.
of or relating to the Sioux or the Siouan languages.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use Siouan in a sentence
The great Siouan race occupied nearly all the upper valley of the Mississippi and Missouri rivers and their tributaries.The Indian Today | Charles A. Eastman
At one Siouan village, "the first Puff blew down all the Palisadoes that fortified the town."Virginia Architecture in the Seventeenth Century | Henry Chandlee Forman
Contrary to the popular opinion of the present day, the general trend of Siouan migration has been westward.
In comparatively late prehistoric times, probably most of the Siouan tribes dwelt east of the Mississippi River.
Once more the Mississippi became the eastern boundary, but in this case separating the Siouan from the Muskhogean territory.
British Dictionary definitions for Siouan
a family of North American Indian languages including Sioux, probably related to Iroquoian
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