| sodium peroxide | |
| —n | |
| a yellowish-white odourless soluble powder formed when sodium reacts with an excess of oxygen: used as an oxidizing agent in chemical preparations, a bleaching agent, an antiseptic, and in removing carbon dioxide from air in submarines, etc. Formula: Na2O2 | |
sodium peroxide n.
A yellowish-white powder used as a germicide, an antiseptic, and a disinfectant.