[ suhl-feyt ]
/ ˈsʌl feɪt /


Chemistry. a salt or ester of sulfuric acid.

verb (used with object), sul·fat·ed, sul·fat·ing.

to combine, treat, or impregnate with sulfuric acid, a sulfate, or sulfates.
to convert into a sulfate.
Electricity. to form a deposit of lead-sulfate compound on (the lead electrodes of a storage battery).

verb (used without object), sul·fat·ed, sul·fat·ing.

to become sulfated.

Origin of sulfate

From the New Latin word sulphātum, dating back to 1780–90. See sulfur, -ate2

Related forms

sul·fa·tion, nounsu·per·sul·fate, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sulfate

Medicine definitions for sulfate


[ sŭlfāt′ ]


A salt or ester of sulfuric acid.
The bivalent group SO4.
A chemical compound containing such a group.


To treat or react with sulfuric acid or a sulfate.
To become sulfated.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for sulfate


[ sŭlfāt′ ]

A salt or ester of sulfuric acid, containing the group SO4.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.