silicon dioxide

noun

A hard glassy mineral, SiO₂, occurring as quartz, sand, opal etc. Informally known as silica.

Meanings

nounsilicon dioxide (uncountable)
  1. uncountablechemistryA hard glassy mineral, SiO₂, occurring as quartz, sand, opal etc. Informally known as silica.

Synonyms & antonyms

nouna white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite

Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Catalan diòxid de silici
  • diòxid de siliciSiO2
Chinese Mandarin 二氧化硅, 二氧化矽
  • 二氧化硅 (èryǎng huàguī)SiO2
  • 二氧化矽 (èryǎng huàxī)SiO2
Czech oxid křemičitý
  • oxid křemičitýSiO2
Dutch silicium dioxyde
  • silicium dioxydeSiO2
Finnish piidioksidi
  • piidioksidiSiO2
French bioxyde de silicium
  • bioxyde de siliciumSiO2
German Siliciumdioxid, Siliziumdioxid
  • SiliciumdioxidSiO2
  • SiliziumdioxidSiO2
Greek διοξείδιο πυριτίου
  • διοξείδιο πυριτίου (dioxeídio pyritíou)SiO2
Hungarian szilícium-dioxid
  • szilícium-dioxidSiO2
Italian diossido del silicone
  • diossido del siliconeSiO2
Japanese 二酸化ケイ素, 二酸化珪素
  • 二酸化ケイ素 (nisanka-keiso)SiO2
  • 二酸化珪素 (nisanka-keiso)SiO2
Korean 이산화 실리콘
  • 이산화 실리콘 (isanhwa sillikon)SiO2
Latin dioxeidium silicii
  • dioxeidium siliciiSiO2
Malay silikon dioksida
  • silikon dioksidaSiO2
Māori takawai hāorarua
  • takawai hāoraruaSiO2
Persian سیلیسیم دیاکسید
  • سیلیسیم دیاکسید (silisyom di-oksid)SiO2
Polish ditlenek krzemu
  • ditlenek krzemuSiO2
Portuguese dióxido do silicone
  • dióxido do siliconeSiO2
Russian диокси́д кре́мния, двуо́кись кре́мния
  • диокси́д кре́мния (dioksíd krémnija)SiO2
  • двуо́кись кре́мния (dvuókisʹ krémnija)SiO2
  • кремнезём (kremnezjóm)SiO2
Spanish dióxido del silicio
  • dióxido del silicioSiO2
Cite this entry
APA

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

MLA

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

Chicago

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

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