# sesquicarbonate

> English word · Noun

## Definitions
1. A chemical compound containing three carbonate ions for every two metal ions.
2. A chemical compound containing one carbonate and one bicarbonate ion in each formula [CO₃HCO₃].

## Etymology
From sesqui- + carbonate.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sesquicarbonate