"carboxylic acid." YourDictionary, n.d. Web. 22 March 2019. <https://www.yourdictionary.com/carboxylic-acid>.
carboxylic acid. (n.d.). Retrieved March 22nd, 2019, from https://www.yourdictionary.com/carboxylic-acid
An organic acid containing one or more carboxyl groups. Carboxylic acids often have names ending in –oic acid, such as benzoic acid. Amino acids, fatty acids, and many other important organic compounds are carboxylic acids.