Definition of sodium oxide
: an oxide of sodium; especially : the hygroscopic amorphous monoxide Na2O that reacts violently with water to yield sodium hydroxide and that is obtained chiefly as an intermediate in the manufacture of sodium peroxide
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up sodium oxide? Please tell us where you read or heard it (including the quote, if possible).