Breadcrumb Home > Dictionary > Index A alkali flat: Meaning and Definition of Find definitions for: al'kali flat' Pronunciation: [key] a level area, as a dry lake bed, in which evaporation has concentrated alkali minerals, as sodium sulfates and carbonates. Cf. salt flat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. alkalic alkalify ✖ Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language