Phrase guide

silicon dioxide

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

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

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: silica, silicon oxide

Antonyms: none provided

Broader terms: oxide

Narrower terms: chert, flint, silex

History

Etymology

No etymology was provided for this word.

Across languages

Translations

25 source translations are retained for this English entry.

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