Dictionary![]() ![]() sul•fatePronunciation: (sul'fāt), [key] —n., v., -fat•ed, -fat•ing. —n. Chem.a salt or ester of sulfuric acid. —v.t. 1. to combine, treat, or impregnate with sulfuric acid, a sulfate, or sulfates. 2. to convert into a sulfate. 3. Elect.to form a deposit of lead-sulfate compound on (the lead electrodes of a storage battery). —v.i. to become sulfated. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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