carboxyl
noun
car·box·yl
kär-ˈbäk-səl 
: a monovalent functional group or radical −COOH typical of organic acids
called also carboxyl group
Examples of carboxyl in a Sentence
Recent Examples on the Web
Between these groups are alpha carbons, which are bonded to both the amino and carboxyl groups, as well as a carbon atom.
—
Amber Smith, Discover Magazine, 16 Nov. 2022
Amino acids are made up of an amino group and a carboxyl group.
—Amber Smith, Discover Magazine, 16 Nov. 2022
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Amber Smith, Discover Magazine, 16 Nov. 2022
Amino acids are made up of an amino group and a carboxyl group.
—Amber Smith, Discover Magazine, 16 Nov. 2022
Cite this Entry
“Carboxyl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/carboxyl. Accessed 18 Jul. 2025.
Copy CitationMedical Definition
carboxyl
noun
car·box·yl
kär-ˈbäk-səl
: a monovalent group −COOH typical of organic acids
called also carboxyl group
Love words? Need even more definitions?
Merriam-Webster unabridged
Share