Mississippian
Americanadjective
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of or relating to the state of Mississippi or the Mississippi River.
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Geology. noting or pertaining to a period of the Paleozoic Era, occurring from about 345 million to 310 million years ago and characterized as the age of amphibians.
noun
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a native or inhabitant of Mississippi.
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Geology. the Mississippian Period or System: the former is sometimes considered an epoch of the Carboniferous Period.
adjective
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of or relating to the state of Mississippi or the Mississippi River
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(in North America) of, denoting, or formed in the lower of two subdivisions of the Carboniferous period, which lasted for 30 million years See also Pennsylvanian
noun
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an inhabitant or native of the state of Mississippi
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the Mississippian period or rock system equivalent to the lower Carboniferous of Europe
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The fifth period of the Paleozoic Era, from about 360 to 320 million years ago. During this time shallow seas spread over former land areas and the first primitive conifers appeared.
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See Chart at geologic time
Etymology
Origin of Mississippian
An Americanism dating back to 1765–75; Mississippi + -an
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Bluesky temporarily blocked access to all Mississippian IP addresses and is still refusing to mandate biometric data.
From Slate • Feb. 11, 2026
The student newspaper, The Daily Mississippian, reported about 30 protesters on the Oxford campus billed themselves as UMiss for Palestine.
From Seattle Times • May 3, 2024
He’s had help from the state’s most prominent Black Democrat, Bennie Thompson, former chair of the House Jan. 6 committee, and even from Oscar winner and Mississippian Morgan Freeman.
From Los Angeles Times • Nov. 2, 2023
The Mississippian site at Cahokia near modern St. Louis is possibly the most elaborate and important researched thus far.
From Textbooks • Apr. 19, 2023
Southwest, past desert farms and cliff dwellings, to the Mississippian societies in the Midwest.
From "1491" by Charles C. Mann
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.