dioxane
noun
di·ox·ane dī-ˈäk-ˌsān 
variants or less commonly dioxan
dī-ˈäk-ˌsan
-sən
: a flammable toxic liquid diether C4H8O2 used especially as a solvent
Example Sentences
Recent Examples on the Web Additionally, be sure to inspect labels for potentially harmful chemicals, such as formaldehyde, phosphates, and dioxane. 
Lauren Krueger, Better Homes & Gardens, 12 Apr. 2022 The talk at parties was about a toxic plume from a landfill, dioxane, and contaminants in the soil from a nearby nuclear laboratory. Bob Morris, Town & Country, 3 May 2018
Lauren Krueger, Better Homes & Gardens, 12 Apr. 2022 The talk at parties was about a toxic plume from a landfill, dioxane, and contaminants in the soil from a nearby nuclear laboratory. Bob Morris, Town & Country, 3 May 2018 Word History
Etymology
International Scientific Vocabulary
First Known Use
1912, in the meaning defined above
Medical Definition
dioxane
noun
di·ox·ane dī-ˈäk-ˌsān
variants also dioxan
-sən -ˌsan
-ˌsan : a flammable toxic liquid C4H8O2 used especially as a solvent and as a clearing agent for histological preparations