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Definition of polyacid in English:

polyacid

Pronunciation /ˌpɒlɪˈasɪd/

adjective

Chemistry

  • Of the nature of or relating to a polyacid.

noun

Chemistry

  • A compound which has more than one acidic group; especially an acid containing polymeric anions.

Origin

Mid 19th century (in an earlier sense). From poly- + acid.