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orthoformic acid

American  
[awr-thuh-fawr-mik, awr-thuh-] / ˈɔr θəˈfɔr mɪk, ˌɔr θə- /

noun

Chemistry.
  1. a hypothetical acid, HC(OH) 3 , known only in the form of its esters.


Etymology

Origin of orthoformic acid

ortho- + formic acid