D defs.my
Entry 2 senses Webster, 1913

Mississippian

· IPA /ˌmɪ.sɪˈsɪ.pi.ən/
01 prop. n. A geological period extending from from 310 million to 345 million years ago; it was associated with an increase of land areas, the presenc…
  1. 1.
    A geological period extending from from 310 million to 345 million years ago; it was associated with an increase of land areas, the presence of primitive ammonites, and emergence of winged insects; called also Missippian period and Lower Carboniferous period. Also: Missippian period, Lower Carboniferous period
  2. 2.
    A resident of Mississippi.