sulfur dioxide

noun

A toxic gas, of molecular formula SO₂ that is found in the emissions of volcanos and those of burning coal or petroleum; dissolves in water to form sulfurous acid and, in the presence of oxygen, sulfuric acid, and is thus responsible for acid rain.

Meanings

nounsulfur dioxide (uncountable)

alternative Commonwealth sulphur dioxide

  1. USuncountablechemistryA toxic gas, of molecular formula SO₂ that is found in the emissions of volcanos and those of burning coal or petroleum; dissolves in water to form sulfurous acid and, in the presence of oxygen, sulfuric acid, and is thus responsible for acid rain.

Synonyms & antonyms

nouna colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain

Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Catalan diòxid de sofre
  • diòxid de sofrethe compound SO2
Chinese Cantonese 二氧化硫
  • 二氧化硫 (ji⁶ joeng⁵ faa³ lau⁴)the compound SO2
Chinese Mandarin 二氧化硫
  • 二氧化硫 (èryǎnghuàliú)the compound SO2
Czech oxid siřičitý
  • oxid siřičitýthe compound SO2
Dutch zwaveldioxide
  • zwaveldioxidethe compound SO2
Esperanto sulfura dioksido
  • sulfura dioksidothe compound SO2
Finnish rikkidioksidi
  • rikkidioksidithe compound SO2
French dioxyde de soufre
  • dioxyde de soufrethe compound SO2
German Schwefeldioxid
  • Schwefeldioxidthe compound SO2
Hindi गन्धक द्विजारेय
  • गन्धक द्विजारेय (gandhak dvijārey)the compound SO2
Hungarian kén-dioxid
  • kén-dioxidthe compound SO2
Icelandic brennisteinsdíoxið, brennisteinstvíoxíð
  • brennisteinsdíoxiðthe compound SO2
  • brennisteinstvíoxíðthe compound SO2
Italian diossido di zolfo, anidride solforosa
  • diossido di zolfothe compound SO2
  • anidride solforosathe compound SO2
Japanese 二酸化硫黄
  • 二酸化硫黄 (nisankaiō)the compound SO2
Persian سولفور دیاکسید
  • سولفور دیاکسیدthe compound SO2
Portuguese dióxido de enxofre
  • dióxido de enxofrethe compound SO2
Russian двуо́кись се́ры, диокси́д се́ры
  • двуо́кись се́ры (dvuókisʹ séry)the compound SO2
  • диокси́д се́ры (dioksíd séry)the compound SO2
Spanish dióxido de azufre
  • dióxido de azufrethe compound SO2
Swedish svaveldioxid
  • svaveldioxidthe compound SO2
Thai ซัลเฟอร์ไดออกไซด์
  • ซัลเฟอร์ไดออกไซด์the compound SO2
Turkish kükürt dioksit
  • kükürt dioksitthe compound SO2
Cite this entry
APA

sulfur dioxide. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sulfur%20dioxide

MLA

“sulfur dioxide.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sulfur%20dioxide. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “sulfur dioxide,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sulfur%20dioxide.

Source: sulfur dioxide on Wiktionary, CC BY-SA 4.0.