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
Brandee Gruener, Southern Living, 11 Apr. 2025
There are no sulfates, phthalates, phosphates, parabens, bleach, or dyes, and each fragrance was dermatologist-tested.
—Lauren Thomann, Better Homes & Gardens, 27 Mar. 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
Spraying foliage with iron sulfate is only a short-term solution, so don't plant these shrubs in alkaline soil.
—Brandee Gruener, Southern Living, 11 Apr. 2025
There are no sulfates, phthalates, phosphates, parabens, bleach, or dyes, and each fragrance was dermatologist-tested.
—Lauren Thomann, Better Homes & Gardens, 27 Mar. 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 7 May. 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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