1
: a salt or ester of sulfuric acid
2
: a divalent group or anion SO4 characteristic of sulfuric acid and the sulfates
Examples of sulfate in a Sentence
Recent Examples on the Web
Erica Sloan, SELF, 9 July 2025
Each Honest product is cruelty-free and avoids 3,500 harmful ingredients like parabens, sulfates, and synthetic fragrances.
—Alyssa Grabinski, People.com, 7 July 2025
Randy Zellers, Field & Stream, 10 Apr. 2023
Energizing Scalp Serum for its gentle, sulfate-free formula.
—Rebecca Deczynski, Health, 30 Jan. 2023
See All Example Sentences for sulfate
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Noun
Go for a gentle, hydrating shampoo free of sulfates to clear away debris without stripping already-fragile strands.
—Erica Sloan, SELF, 9 July 2025
Each Honest product is cruelty-free and avoids 3,500 harmful ingredients like parabens, sulfates, and synthetic fragrances.
—Alyssa Grabinski, People.com, 7 July 2025
Verb
When the battery overheats, the water in the sulfuric acid solution within its case will boil and escape, leaving dry lead plates behind, which sulfate and lose their capacity.
—Randy Zellers, Field & Stream, 10 Apr. 2023
Energizing Scalp Serum for its gentle, sulfate-free formula.
—Rebecca Deczynski, Health, 30 Jan. 2023
See All Example Sentences for sulfate
Cite this Entry
“Sulfate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfate. Accessed 19 Jul. 2025.
Copy CitationMedical Definition
sulfate
2 of 2 transitive verb
variants
or chiefly British sulphate
sulfated or chiefly British sulphated; sulfating or chiefly British sulphating
: to treat or combine with sulfuric acid or a sulfate
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