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potassium diphosphate

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noun Chemistry.
  1. See under potassium phosphate.
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potassium phosphate

noun Chemistry.
  1. any of the three orthophosphates of potassium (potassium monophosphate (K2HPO4), potassium diphosphate (KH2PO4), and tripotassium phosphate (K3PO4)).
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Origin of potassium phosphate

First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018