benzoyl: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “benzoyl” mean?
The univalent radical C6H5CO– derived from benzoic acid.
Audio
Pronunciation
Definition
Meaning and Definition
The univalent radical C6H5CO– derived from benzoic acid.
In chemistry, a prefix or term used in the names of compounds containing this group. In everyday contexts, it is almost exclusively encountered in the name of the common acne treatment 'benzoyl peroxide'.
Dialectal Variation
British vs American Usage
Differences
No lexical or spelling differences. Pronunciation differs slightly.
Connotations
None; purely technical.
Frequency
Identically rare and specialised in both varieties, with a slight increase in public recognition due to over-the-counter acne medications.
Grammar
How to Use “benzoyl” in a Sentence
[benzoyl] + [noun (e.g., peroxide, chloride)][noun] + containing + [benzoyl][substituted] + with + [benzoyl]Vocabulary
Collocations
Examples
Examples of “benzoyl” in a Sentence
adjective
British English
- The reaction proceeds via a benzoyl intermediate.
- The benzoyl derivative was isolated.
American English
- We identified a benzoyl substituent on the ring.
- The benzoyl compound showed high reactivity.
Usage
Meaning in Context
Business
Potentially in pharmaceutical or chemical manufacturing contexts.
Academic
Exclusively in chemistry, biochemistry, pharmacology, and cosmetic science literature.
Everyday
Virtually non-existent, except when discussing acne treatments ('benzoyl peroxide').
Technical
Primary domain. Refers to a specific functional group in organic chemistry.
Vocabulary
Synonyms of “benzoyl”
Neutral
Watch out
Common Mistakes When Using “benzoyl”
- Mispronouncing as /ˈbɛnzɔɪl/ (like 'benz-oil').
- Using it as a standalone noun for a pure substance (it is always part of a compound).
FAQ
Frequently Asked Questions
Only if you study chemistry, pharmacology, or work with skincare products. For general English, you only need to recognise 'benzoyl peroxide'.
Benzene (C6H6) is a simple aromatic ring molecule. Benzoyl (C6H5CO–) is a benzene ring attached to a carbonyl group (C=O); it's a fragment that forms part of other molecules.
No. It is not a stable substance on its own. You can buy compounds that contain the benzoyl group, such as benzoyl peroxide or benzoyl chloride.
As part of 'benzoyl peroxide', it acts as an antibacterial and oxidizing agent effective against the bacteria that cause acne.
The univalent radical C6H5CO– derived from benzoic acid.
Benzoyl is usually technical/scientific in register.
Benzoyl: in British English it is pronounced /ˈbɛnzəʊɪl/, and in American English it is pronounced /ˈbɛnzoʊɪl/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: BENZene + oYL (like 'oil' or 'acyl' group). It's the group from benz-oic acid.
Practice
Quiz
What is 'benzoyl'?