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Meaning of diammonium phosphate

di'am•mo'ni•um phos'phate

Pronunciation: (dī'u-mō'nē-um, dī"-), [key]
— Chem. Chem.
  1. a white, crystalline, water-soluble compound, (NH)HPO, used as fertilizer, in fire extinguishers, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.