/ Dictionary / Index E edetate calcium disodium: Meaning and Definition of Find definitions for: ed'e•tate cal'cium diso'dium Pronunciation: (ed'u-tāt"), [key] — n. Pharm. a chelating agent, CHCaNNaO, used in medicine to treat lead poisoning. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Edessa Edgar Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language