The Collaborative International Dictionary
Suboxide \Sub*ox"ide\, n. (Chem.) An oxide containing a relatively small amount of oxygen, and less than the normal proportion; as, potassium suboxide, K4O.
Wiktionary
n. (context chemistry English) any oxide containing a small proportion of oxygen
Wikipedia
Suboxides are a class of oxides wherein the electropositive element is in excess relative to the “normal” oxides. When the electropositive element is a metal, the compounds are sometimes referred to as “metal-rich”. Thus the normal oxide of caesium is CsO, which is described as a Cs salt of O. A suboxide of caesium is CsO, where the charge on Cs is clearly less than 1+, but the oxide is still described as O. Suboxides typically feature extensive bonding between the electropositive element, often leading to clusters.
Examples of suboxides include
- Carbon suboxide, CO;
- Boron suboxide, BO;
- Rubidium suboxide, RbO;
- Silicon suboxide, SiO (x < 2)
Usage examples of "suboxide".
But there were many other candidate materials proposed, among them, ammonium chloride, carbon suboxide, various silicates and oxides, solutions of hydrochloric acid, a hydrated ferric chloride, carbohydrates, and hydrocarbons.