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Definition of dioxide

dioxide

/daɪˈɑːksaɪd/
di · ox · ide
Plural:dioxides
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dioxide Lexical Profile

dioxide Game Scores & Validity

• noun

1

An oxide containing two atoms of oxygen in its molecule or empirical formula, bonded to another element or chemical radical.

Example

"Carbon dioxide and sulfur dioxide are among the most widely studied atmospheric gases in environmental science."

• Rhymes for dioxide

• Nearby Words

diode
diorama
diospyros
dioxide
dip
dipelta
dipladenia

Word Origin & Etymology

Coined in the mid-19th century in chemical nomenclature from the Greek prefix di- ('two') and oxide, ultimately derived from French oxygène ('oxygen').

Cite this Entry

Wordmom. (2026). Definition of Dioxide. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/dioxide
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