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sulphate

British  
/ ˈsʌlfeɪt /

noun

  1. any salt or ester of sulphuric acid, such as sodium sulphate, Na 2 SO 4 , sodium hydrogen sulphate, or diethyl sulphate, (C 2 H 5 ) 2 SO 4

  2. Often shortened to: sulphslang amphetamine sulphate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. (tr) to treat with a sulphate or convert into a sulphate

  2. to undergo or cause to undergo the formation of a layer of lead sulphate on the plates of an accumulator

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • sulphation noun

Etymology

Origin of sulphate

C18: from New Latin sulfātum; see sulphur

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is also a key trading route for other commodities such as helium, the chemical sulphate, and urea, which is used to produce fertiliser.

From BBC • Mar. 12, 2026

Bikita Minerals, Zimbabwe's largest lithium mine and owned by Sinomine Resources Group, is working on feasibility studies for the construction of a lithium sulphate plant in December, spokesperson Tinomuda Chakanyuka said.

From Barron's • Feb. 26, 2026

They identified geochemical "fingerprints" of various microorganisms, including those that must have used sunlight for energy, metabolised sulphate and probably also produced methane.

From Science Daily • Jan. 24, 2024

Rival exchange CME Group is looking into launching a nickel sulphate contract, according to sources.

From Reuters • Sep. 14, 2022

Thus, if nicotine sulphate is applied before rather than after the apple blossoms turn pink one of the important predators is spared, probably because it is still in the egg stage.

From "Silent Spring" by Rachel Carson