| dioxin | Any in a family of over 200 chlorinated organic chemicals (allheterocyclic hydrocarbons). The term is most commonly applied to a particular chemical, 2, 3, 7, 8-tetrachlorodibenzo-paradioxin (2, 3, 7, 8-TCDD, simply called TCDD), which is an impurity in the defoliant AgentOrange and in the pesticide 2, 4, 5-T(see auxin). Dioxins are also producedwhenchlorinated materials such as plastics are burned. Dioxins are knownto cause skin diseases (chloracne), birth defects, miscarriages, and cancer. (09 Oct 1997) |
|---|---|
| dioxin dioxygenase | <enzyme> Catalyses initial step of the degradations of dibenzofuan and dibenzo-p-dioxin; isolated from sphingomonas Registry number: EC 1.14.99.- (26 Jun 1999) |
| dioxindol | <chemistry> A white, crystalline, nitrogenous substance obtained by the reduction of isatin. It is a member of the indol series; hence its name. Origin: Pref. Di- + oxygen + indol. Source: Websters Dictionary (01 Mar 1998) |
| dioxins | Heterocyclic hydrocarbons present as trace contaminants in herbicides, especially the chlorinated dioxin 2,3,7,8-tetrachlorodibenzo-p-dioxin (tetrachlorobenzodioxin). Many dioxins are teratogenic and carcinogenic. (12 Dec 1998) |