Mima mound

noun

Mima mound

noun

Etymology Named after the Mima Prairie in Thurston County, Washington.

Geography, Geology, Natural sciences A low, flattened dome-like natural mound found in the northwestern United States, composed of loose, unstratified, often gravelly sediment.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.