noun
dioxide
deye-OK-syd
noun
1
A chemical compound in which two oxygen atoms are bonded to one atom of another element.
"Carbon dioxide is released when fossil fuels are burned."
How to Use Dioxide
Learner’s notesIn plain EnglishA compound with two oxygen atoms attached to another element — most familiar from carbon dioxide.
Common pairings
carbon dioxide
sulfur dioxide
nitrogen dioxide
Word Forms
dioxides plural
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Carbon _____ is released when fossil fuels are burned.
Etymology
Formed from the prefix "di-" (two) plus "oxide," reflecting the two oxygen atoms in the compound.