sulphur

¹ American  

[suhl-fer] / ˈsʌl fər /

noun

1. Chiefly British. sulfur.

2. Also yellow with a greenish tinge; lemon color.

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Sulphur ² American  

[suhl-fer] / ˈsʌl fər /

noun

1. a city in SW Louisiana.

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sulphur British  

/ ˈsʌlfə, sʌlˈfjʊərɪk /

noun

1. 1. an allotropic nonmetallic element, occurring free in volcanic regions and in combined state in gypsum, pyrite, and galena. The stable yellow rhombic form converts on heating to monoclinic needles. It is used in the production of sulphuric acid, in the vulcanization of rubber, and in fungicides. Symbol: S; atomic no: 16; atomic wt: 32.066; valency: 2, 4, or 6; relative density: 2.07 (rhombic), 1.957 (monoclinic); melting pt: 115.22°C (rhombic), 119.0°C (monoclinic); boiling pt: 444.674°C

   2. ( as modifier )

      sulphur springs

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Other Word Forms

• sulphuric adjective

Etymology

Origin of sulphur

Variant of sulfur

Example Sentences

Ord Minnett says Lotus’s supplies of acid and sulphur look secure at present, but fuel is more precarious.

From The Wall Street Journal • Mar. 25, 2026

Charles Goodyear discovered vulcanization when a mixture of natural rubber and sulphur accidentally fell onto a hot surface.

From Science Daily • Mar. 14, 2026

Another issue is that Russian Urals crude has a higher sulphur content than the Brent crude supplied from elsewhere.

From BBC • Oct. 28, 2025

"It does seem like sulphur is the primary candidate for what's driving this warming in the region," said Dr Hausfather.

From BBC • Oct. 17, 2025

He broke out a sulphur match and struck it on the block and held it away until its acrid blue flame turned yellow.

From "East of Eden" by John Steinbeck