As a noun dioxide is
.
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English
Noun
(
en noun)
(chemistry) Any oxide containing two oxygen atoms in each molecule.
Derived terms
* americium dioxide
* berkelium dioxide
* carbon dioxide
* cerium dioxide
* chlorine dioxide
* chromium dioxide
* curium dioxide
* germanium dioxide
* hafnium dioxide
* hydrogen dioxide
* lead dioxide
* manganese dioxide
* nitrogen dioxide
* plumbic dioxide
* plutonium dioxide
* ruthenium dioxide
* selenium dioxide
* silicon dioxide
* sulfur dioxide, sulphur dioxide
* tellurium dioxide
* thorium dioxide
* tin dioxide
* titanium dioxide
* uranium dioxide
* vanadium dioxide
* zirconium dioxide