Standard Lemma guide

dioxin

noun · 5 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • Received-Pronunciation: /daɪˈɒksɪn/
  • Received-Pronunciation: Recorded audio is listed in the source snapshot.
  • General-American: /daɪˈɑksən/
  • rhymes with -ɒksɪn
  • CMU ARPABET: D AY2 AA1 K S IH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The unsaturated six-membered heterocycle having four carbon atoms, two oxygen atoms, and two double bonds (molecular formula C4H4O2); 1,2-dioxin and 1,4-dioxin.

Definition source: English Wiktionary via Wiktextract

Usage: countable

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 parent compound dibenzo-1,4-dioxin or dibenzo-p-dioxin (molecular formula C12H8O2), in which two benzene rings are connected through two oxygen atoms; dibenzodioxin, oxanthrene.

Definition source: English Wiktionary via Wiktextract

Usage: countable

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Any of a broad range of toxic or carcinogenic halogenated polycyclic compounds that occur as byproducts of herbicides.

Definition source: English Wiktionary via Wiktextract

Usage: countable

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

Any of a broad range of toxic or carcinogenic halogenated polycyclic compounds that occur as byproducts of herbicides.

The compound 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD; molecular formula C12H4Cl4O2), a persistent organic pollutant of the environment which is generally produced as a byproduct of organic synthesis or when organic materials are burned.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, specifically, uncountable

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

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

any of several toxic or carcinogenic hydrocarbons that occur as impurities in herbicides

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: hydrocarbon

History

Etymology

PIE word *dwóh1 From di- (prefix meaning ‘double; two’) + ox(ygen) + -in (suffix indicating a neutral chemical compound), a reference to the fact that the compound has two oxygen atoms.

Across languages

Translations

20 source translations are retained for this English entry.

  • Bulgarian: диокси́н (dioksín) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Chinese Mandarin: 二噁英 /二𫫇英 (èr'èyīng) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Danish: dioxin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Finnish: dioksiini — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • French: dioxine — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • German: Dioxin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Hebrew: דיאוקסין (dioksín) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Hungarian: dioxin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Japanese: ダイオキシン (daiokishin) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Kazakh: диоксин (dioksin) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Korean: 다이옥신 (daioksin) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Latvian: dioksīns — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Norwegian Bokmål: dioksin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Norwegian Nynorsk: dioksin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Polish: dioksyna — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Portuguese: dioxina — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Romanian: dioxină — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Russian: диоксин (dioksin) — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Swedish: dioxin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds
  • Turkish: dioksin — any of a broad range of toxic or carcinogenic halogenated polycyclic compounds