TCDD may refer to any of the following:
*
Turkish State Railways
The State Railways of the Republic of Turkey ( tr, Türkiye Cumhuriyeti Devlet Demiryolları), abbreviated as TCDD, is a government-owned national railway company responsible with the ownership and maintenance of railway infrastructure in Turkey ...
(Türkiye Cumhuriyeti Devlet Demiryolları) - The national railway carrier of Turkey.
**
TCDD Taşımacılık
TCDD Taşımacılık A.Ş. ( en, TCDD Transport, reporting mark TCDDT) is a government-owned railway company responsible for the operations of most passenger and freight rail in Turkey. The company was formed on 14 June 2016, splitting off from th ...
- A Turkish transport company responsible for railway operations.
*
2,3,7,8-Tetrachlorodibenzodioxin
2,3,7,8-Tetrachlorodibenzo-''p-''dioxin (TCDD) is a polychlorinated dibenzo''-p-''dioxin (sometimes shortened, though inaccurately, to simply 'dioxin')Tuomisto, Jouko (2019) Dioxins and dioxin-like compounds: toxicity in humans and animals, s ...
— a type of
dioxin
Dioxin may refer to:
* 1,2-Dioxin or 1,4-Dioxin, two unsaturated heterocyclic 6-membered rings where two carbon atoms have been replaced by oxygen atoms, giving the molecular formula C4H4O2
* Dibenzo-1,4-dioxin, the parent compound also known ...
.
*
Texas Council for Developmental Disabilities
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