phosphate

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noun phos·phate \ˈfäs-ˌfāt\

Definition of phosphate

  1. 1 a (1) :  a salt or ester of a phosphoric acid (2) :  the trivalent anion PO43− derived from phosphoric acid H3PO4 b :  an organic compound of phosphoric acid in which the acid group is bound to nitrogen or a carboxyl group in a way that permits useful energy to be released (as in metabolism)

  2. 2 :  an effervescent drink of carbonated water with a small amount of phosphoric acid flavored with fruit syrup

  3. 3 :  a phosphatic material used for fertilizers

Origin and Etymology of phosphate

French, from acide phosphorique phosphoric acid


First Known Use: 1788


PHOSPHATE Defined for English Language Learners

phosphate

play
noun phos·phate \ˈfäs-ˌfāt\

Definition of phosphate for English Language Learners

  • chemistry : a salt or compound that has phosphorus in it and that is used especially in products (called fertilizers) that help plants grow


Medical Dictionary

phosphate

play
noun phos·phate \ˈfäs-ˌfāt\

Medical Definition of phosphate

  1. 1a:  a salt or ester of a phosphoric acidb:  the trivalent anion PO43− derived from phosphoric acid H3PO4

  2. 2:  an organic compound of phosphoric acid in which the acid group is bound to nitrogen or a carboxyl group in a way that permits useful energy to be released (as in metabolism)



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