IPA: /ˈtɛtrəʊksaɪd/
KK: /ˈtɛtrəksaɪd/
A chemical substance that has four oxygen atoms in each molecule.
Dinitrogen tetroxide is a common example of a tetroxide used in rocket propellants.
**Tetroxide** → It is formed from "tetra-" (from Greek *tetra*, meaning four) and "oxide" (from Latin *oxydatum*, meaning acid-forming). The word "tetroxide" refers to a chemical compound containing four oxygen atoms.
Think of 'tetra-' meaning four, and 'oxide' referring to oxygen — so a tetroxide is a compound with four oxygen atoms.