- the acid, H2CO3, formed when carbon dioxide dissolves in water, known in the form of its salts and esters, the carbonates.
Origin of carbonic acid
First recorded in 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for carbonic acid
It is highly inflammable, burning with a pale-blue flame, and giving off sulphurous and carbonic-acid gases.
This is carbonic-acid gas, which is a poison and will destroy life.First Book in Physiology and Hygiene
Here it combines with the carbonic-acid gas taken from the air.The School Book of Forestry</p>
Charles Lathrop Pack
These bubbles are a form of gas called carbon-dioxide, or carbonic-acid, gas.Woman's Institute Library of Cookery, Vol. 1
Woman's Institute of Domestic Arts and Sciences
The most amazing fact is that this "too, too solid flesh" of the tree body was all made of dirty water and carbonic-acid gas.Trees Worth Knowing
Julia Ellen Rogers
- a weak acid formed when carbon dioxide combines with water: obtained only in aqueous solutions, never in the pure state. Formula: H 2 CO 3
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A weak, unstable acid present in solutions of carbon dioxide in water. It gives carbonated beverages their sharp taste. Chemical formula: H2CO3.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.