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
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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
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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 13 Jul. 2025.
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carboxyl
noun
car·box·yl
kär-ˈbäk-səl
: a monovalent group −COOH typical of organic acids
called also carboxyl group
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