類戴奧辛物質（英語：dioxin-like compounds），包含双苯并氧杂环（1,4-二𫫇英或呋喃）及其卤代物，一般也延伸地包含多氯联苯以及对二𫫇英本身。

1,4-二噁英（英語：1,4-dioxin），或称对二噁英（英語：p-dioxin），常簡稱為“二噁英”，是一種单环有機化合物，是一種在工業上無實際用途的副產物。

Dioxin may refer to: 1,2-Dioxin or 1,4-Dioxin, two unsaturated heterocyclic 6-membered rings in which two carbon atoms have been replaced by oxygen atoms, which gives the molecular formula C4H4O2 Dibenzo-1,4-dioxin, also known as dibenzodioxin or dibenzo-p-dioxin, in which two benzene rings are connected through two oxygen atoms.

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