Hydrogen dioxide is more commonly known as hydrogen peroxide. This powerful oxidizer is often used as a disinfectant, bleaching agent, and as a propellant for rockets. It is produced naturally in the atmosphere and in living organisms, where it plays a role in metabolism and the immune system. Other synonyms for hydrogen peroxide include perhydrol, oxydol, and peroxide of hydrogen. However, it is important to use caution when handling hydrogen peroxide as it can be a potent irritant and can even be explosive when exposed to certain substances. Always follow proper safety guidelines and consult with a professional before using hydrogen peroxide in any application.