Standard Lemma guide

disulfide

noun · 3 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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  • UK, US: /daɪˈsʌlfaɪd/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

A functional group with two sulfur atoms bonded to one another, described by the following formula: R–S–S–R'.

Definition source: English Wiktionary via Wiktextract

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The anion −S–S−.

Definition source: English Wiktionary via Wiktextract

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A binary compound of sulfur and another element in the ratio 2:1 (formula XS2).

Definition source: English Wiktionary via Wiktextract

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

Etymology tree Proto-Indo-European *dwóh1 Proto-Indo-European *dwi- Proto-Hellenic *dwi- Ancient Greek δῐ- (dĭ-)bor. Latin di-bor. English di- Latin sulpur Latin sulfur Latin sulphur Anglo-Norman sulfrebor. Middle English sulphur English sulf(ur) Proto-Indo-European *dheh1-der. Proto-Italic *-iðos Latin -idusder. English -ide English sulfide English disulfide From di- + sulfide.

Across languages

Translations

7 source translations are retained for this English entry.

  • Catalan: disulfur — functional group
  • Hindi: द्विगन्धेय (dvigandhey) — functional group
  • Irish: déshuilfíd — functional group
  • Italian: disolfuro — functional group
  • Polish: disiarczek — functional group
  • Polish: dwusiarczek — functional group
  • Spanish: disulfuro — functional group