Definition of pseudo-acid in US English:

pseudo-acid

noun

Chemistry
  • A compound which is not itself an acid but which exists in equilibrium with, or is easily converted into, an acidic form and thus undergoes some typical reactions of acids.

Origin

Late 19th century; earliest use found in Journal of the Chemical Society. From pseudo- + acid, after German Pseudosäure.

Pronunciation

pseudo-acid

/ˈs(j)uːdəʊˌasɪd/