trioxide

noun

tri·​ox·​ide (ˌ)trī-ˈäk-ˌsīd 

: an oxide containing three atoms of oxygen

Examples of trioxide in a Sentence

Recent Examples on the Web

The same mathematical framework applies to 2D materials like hexagonal boron nitride and molybdenum trioxide, which host hybrid light-matter excitations called hyperbolic phonon polaritons. — Mrigakshi Dixit, Interesting Engineering, 28 Sep. 2026

Following her diagnosis, Simandl spent 37 consecutive days in the hospital receiving chemotherapy with arsenic trioxide and followed that with eight months of outpatient treatment. — Tereza Shkurtaj, PEOPLE, 11 Apr. 2026

The French mint reformulated its protective varnish after the European Union restricted chromium trioxide, a toxic chemical previously used to prevent corrosion. — Eric Sullivan, Scientific American, 21 Feb. 2026

Antimony trioxide can be used in foam and plastic production as a flame-resistant substance, but it has been studied for carcinogenic outcomes. — Julia Forbes, Wired News, 22 July 2025

Word History

Etymology

International Scientific Vocabulary

First Known Use

1863, in the meaning defined above

Rhymes for trioxide

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

Medical Definition

trioxide

noun

tri·​ox·​ide (ˈ)trī-ˈäk-ˌsīd 

: an oxide containing three atoms of oxygen