oxide

noun

ox·​ide ˈäk-ˌsīd 

: a binary compound of oxygen with a more electropositive element or group

oxidic

äk-ˈsi-dik 

adjective

Examples of oxide in a Sentence

Recent Examples on the Web

Trimethylbenzoyl diphenylphosphine oxide, or TPO, enables the hardening of gel and hybrid polishes when placed under UV light. —Keyaira Boone, Essence, 5 Sep. 2025

At the heart of the ban is trimethylbenzoyl diphenylphosphine oxide (TPO). —Hannah Nwoko, Parents, 5 Sep. 2025

Researchers at Kyushu University in Japan recently developed a new type of solid-oxide fuel cell (SOFC) that successfully operated at 300℃ (500°F), a notable reduction from typical operating temperatures. —Aman Tripathi, Interesting Engineering, 4 Sep. 2025

Meet the experts To be perfectly clear, gel nail polishes and manicures themselves have not been banned outright in the EU—just trimethylbenzoyl diphenylphosphine oxide. —Marci Robin, Allure, 3 Sep. 2025

Word History

Etymology

French oxide, oxyde, from ox- (from oxygène oxygen) + -ide (from acide acid)

First Known Use

1788, in the meaning defined above

Phrases Containing oxide

• aluminum oxide
• calcium oxide
• deuterium oxide
• ethylene oxide
• ferric oxide
• iron oxide
• lead oxide
• magnesium oxide
• nitric oxide
• nitrogen oxide
• nitrous oxide
• zinc oxide

Rhymes for oxide

• abide
• allied
• applied
• aside
• astride
• azide
• backside
• bankside
• bastide
• bayside
• bedside
• belied

Kids Definition

oxide

noun

ox·​ide ˈäk-ˌsīd 

: a compound of oxygen with another element or a chemical group

Medical Definition

oxide

noun

ox·​ide ˈäk-ˌsīd 

: a binary compound of oxygen with a more electropositive element or chemical group