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carboxyl

Upper-Intermediate (B2)

IPA: //kɑːrˈbɒksɪl//

KK: /kɑrˈbɑksəl/

noun
Definition

A specific group of atoms in organic chemistry that consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group, making it a key component of organic acids.


Example

The carboxyl group is essential in the structure of amino acids.


Conversation
Sloth A
Did you know that the carboxyl group is found in all organic acids?
Sloth B
Really? I always thought acids were just sour substances.
Sloth A
Yeah, it's interesting how the carboxyl group makes them unique.
Sloth B
I should look into that more; science is pretty fascinating!

Synonyms & Antonyms
Synonyms
acid
group
radical
Antonyms
base
alkali
neutral
Root Explanation

Carboxyl is formed from "carbo-" (from Latin "carbo", meaning coal or carbon) and "-yl" (a suffix used in chemistry to denote a functional group). The term refers to a functional group containing carbon and oxygen, specifically a carbon atom double-bonded to an oxygen atom and single-bonded to a hydroxyl group.

Memory Tip

Think of 'carbon' ('carbo-') as the key element in this group, and remember that 'carboxyl' refers to a specific structure involving carbon and oxygen.

Visually Confused Words
aroxyl
dicarboxylic
caproyl
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