Orthophosphoric acid

noun

Definitions

Noun
  1. 1
    Ordinary phosphoric acid, H₃PO₄ uncountable

    "Metaphosphoric acid gives a white precipitate with nitrate of silver solution; orthophosphoric acid does not give any, save on the addition of an alkali, and the precipitate then produced is yellow."

  2. 2
    an acid used in fertilizers and soaps: H3PO4 wordnet

Etymology

From ortho- + phosphoric acid.

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