Phrase guide

sulfur trioxide

noun · 1 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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1

noun

Meaning 1

A corrosive liquid, SO3, which forms sulfuric acid on contact with water; made commercially by the oxidation of sulfur dioxide.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: chemistry, inorganic-chemistry, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

9 source translations are retained for this English entry.

  • Chinese Cantonese: 三氧化硫 (saam1 joeng5 faa3 lau4) — the compound SO3
  • Chinese Mandarin: 三氧化硫 (sānyǎnghuàliú) — the compound SO3
  • Czech: oxid sírový — the compound SO3
  • French: trioxyde de soufre — the compound SO3
  • German: Schwefeltrioxid — the compound SO3
  • Hungarian: kén-trioxid — the compound SO3
  • Italian: triossido di zolfo — the compound SO3
  • Italian: anidride solforica — the compound SO3
  • Swedish: svaveltrioxid — the compound SO3