aluminium oxide: meaning, definition, pronunciation and examples
B2Technical/Scientific
Quick answer
What does “aluminium oxide” mean?
A chemical compound formed from aluminium and oxygen, with the formula Al₂O₃.
Audio
Pronunciation
Definition
Meaning and Definition
A chemical compound formed from aluminium and oxygen, with the formula Al₂O₃.
A naturally occurring or synthetically produced ceramic material known for its hardness, high melting point, and use as an abrasive, refractory material, or precursor to metallic aluminium.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; the spelling of 'aluminium' vs. 'aluminum' carries over to the compound name.
Connotations
Identical technical connotations.
Frequency
Equal frequency in technical contexts in both regions.
Grammar
How to Use “aluminium oxide” in a Sentence
[SUBJECT] is coated with aluminium oxideAluminium oxide is used for [PURPOSE]The reaction forms aluminium oxideVocabulary
Collocations
Examples
Examples of “aluminium oxide” in a Sentence
adjective
British English
- The aluminium-oxide coating provides excellent corrosion resistance.
American English
- An aluminum-oxide abrasive disc is fitted to the grinder.
Usage
Meaning in Context
Business
Discussed in industrial supply chains for abrasives, ceramics, and aluminium production.
Academic
A core subject in inorganic chemistry, materials engineering, and geology papers.
Everyday
Rarely used; might be mentioned in DIY contexts regarding sandpaper or grinding wheels.
Technical
Precise term for the compound Al₂O₃, specifying its phase, purity, or particle size.
Vocabulary
Synonyms of “aluminium oxide”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “aluminium oxide”
- Misspelling as 'aluminum oxide' in British contexts or 'aluminium oxide' in American technical writing where 'alumina' is preferred.
- Confusing it with aluminium hydroxide or other aluminium compounds.
FAQ
Frequently Asked Questions
Yes, 'alumina' is a common synonym, especially in industrial and materials science contexts.
The aluminium oxide layer that forms naturally is dense and adherent, preventing further oxidation of the underlying metal.
In its solid, bulk form it is inert and safe, but fine dust can be an inhalation hazard, irritating the respiratory system.
Aluminium oxide (Al₂O₃) is an oxide; aluminium hydroxide (Al(OH)₃) is a hydroxide, often used as an antacid or flame retardant.
A chemical compound formed from aluminium and oxygen, with the formula Al₂O₃.
Aluminium oxide is usually technical/scientific in register.
Aluminium oxide: in British English it is pronounced /ˌæl.jʊˈmɪn.i.əm ˈɒk.saɪd/, and in American English it is pronounced /əˈluː.mə.nəm ˈɑːk.saɪd/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of 'AlumiNUM OXIDE' – the NUMber of oxygen atoms is three (O₃), and it comes from alumiNUM.
Conceptual Metaphor
A PROTECTIVE SHIELD (due to its use in forming protective surface layers on aluminium metal).
Practice
Quiz
What is a common natural mineral form of aluminium oxide?