a level area, as a dry lake bed, in which evaporation has concentrated alkali minerals, as sodium sulfates and carbonates.
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- alkali blue,
- alkali denaturation test,
- alkali feldspar,
- alkali grass,
- alkali metal,
- alkali metals,
- alkali metaprotein,
- alkali reserve
Compare salt flat.
Origin of alkali flat
An Americanism dating back to 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an arid plain encrusted with alkaline salts derived from the streams draining into it
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