- a soil that forms in subhumid, temperate regions with tall grass as native vegetation.
Origin of prairie soil
An Americanism dating back to 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a soil type occurring in temperate areas formerly under prairie grasses and characterized by a black A horizon, rich in plant foods
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012