Definition of pyrophosphoric acid in English:

pyrophosphoric acid

noun

Chemistry
  • [mass noun] A glassy solid obtained by heating phosphoric acid.

    • ‘Pyrophosphoric acid is colorless, odorless, hygroscopic and is soluble in water.’

Pronunciation:

pyrophosphoric acid

/ˌpʌɪrə(ʊ)fɒsˈfɒrɪk/