oxides
nounUK /ˈɒksaɪdz/
US /ˈɑːksaɪdz/
Oxides are chemicals made when oxygen joins with another element.
Rust is an oxide that forms when iron mixes with oxygen.
OTHER MEANINGS
2. Plural form of oxide, referring to more than one compound of oxygen with another element.
The lab stored several metal oxides in labeled jars.
3. Compounds formed by burning elements in air, often seen as ash or powder.
Burning magnesium leaves white oxides behind.
4. Substances in minerals and rocks that contain oxygen bonded to metals.
Many rocks are made of oxides like iron oxide.