trioxane
noun
tri·ox·ane
| \ -ˌsān\
Definition of trioxane
: a crystalline combustible heterocyclic trimer (CH2O)3 of formaldehyde with an odor resembling chloroform that is depolymerized into formaldehyde by traces of mineral acids
— called also symmetrical trioxane
— compare paraformaldehydeKeep scrolling for more