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
Bethany Braun-Silva, ABC News, 15 June 2024
This detangler is free of sulfates, phthalates, and common allergens like gluten, wheat, and nuts.
—Ashley Ziegler, Parents, 13 June 2024
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 
Noun
Suitable for sensitive skin and safe for all body parts.
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Native Whole Body Deodorant Spray
Key ingredients: Coconut oil, shea butter, tapioca and essential oils
Benefits: Free from aluminum, parabens, and sulfates.
—Bethany Braun-Silva, ABC News, 15 June 2024
This detangler is free of sulfates, phthalates, and common allergens like gluten, wheat, and nuts.
—Ashley Ziegler, Parents, 13 June 2024
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
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Cite this Entry
“Sulfate.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfate. Accessed 2 Jul. 2024.
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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