/mis'euh sip"ee euhn/ , adj.
1. of or pertaining to the state of Mississippi or the Mississippi River.
2. Geol. 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. See table under geologic time .
n.
3. a native or inhabitant of Mississippi.
4. Geol. the Mississippian Period or System: the former is sometimes considered an epoch of the Carboniferous Period.
[ 1765-75, Amer.; MISSISSIPPI + -AN ]