sesquicarbonate

sesquicarbonate

(ˌsɛskwɪˈkɑːbəˌneɪt; -nɪt) n (Elements & Compounds) a mixed salt consisting of a carbonate and a hydrogen carbonate, such as sodium sesquicarbonate, Na2CO3.NaHCO3.2H2O

ses•qui•car•bon•ate

(ˌsɛs kwɪˈkɑr bəˌneɪt, -nɪt)

n. a salt intermediate in composition between a carbonate and a bicarbonate or consisting of the two combined. [1815–25]