Definition of pyrocarbonate in US English:



  • Chemistry. Any of a class of organic compounds (dicarbonates) of the general formula RO—CO—O—CO—OR′; especially (in full diethyl pyrocarbonate) a viscous liquid with a fruity odour that is a ribonuclease inhibitor formerly used as an antimicrobial preservative for wine and soft drinks.


Late 19th century (in an earlier sense). From pyro- + carbonate. In sense 1 after pyrogallic, pyrogallol.