organized as a U.S. territory 1838; admitted as a state 1846, named for the river, ultimately from the name of the native people, of the Chiwere branch of the Aiouan family; said to be from Dakota ayuxba "sleepy ones," or from an Algonquian language (Bright cites Miami/Illinois /aayohoowia/). On a French map of 1673 it appears as Ouaouiatonon. Related: Iowan.
ionize
ionosphere
iopterous
iota
IOU
Iowa
IPA
ipecac
ipse dixit
ipseity
ipsilateral
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