Containing two atoms of sodium.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Examples from the Web for disodium
Historical Examples of disodium
Disodium hydrogen phosphate is ordinary common sodium phosphate.
Why does a solution of disodium hydrogen phosphate react alkaline?
Sodium hydroxide is strongly alkaline, while disodium phosphate is nearly neutral in reaction.