chromic oxide: meaning, definition, pronunciation and examples
LowTechnical/Scientific
Quick answer
What does “chromic oxide” mean?
A green inorganic compound with the chemical formula Cr₂O₃, used primarily as a pigment and in industrial applications.
Audio
Pronunciation
Definition
Meaning and Definition
A green inorganic compound with the chemical formula Cr₂O₃, used primarily as a pigment and in industrial applications.
A stable, refractory oxide of chromium, valued for its colour, hardness, and chemical inertness. It appears in contexts ranging from art (as viridian pigment) to metallurgy (as an abrasive) and catalysis.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Potential minor variation in the pronunciation of 'chromic' (/ˈkrəʊmɪk/ vs /ˈkroʊmɪk/).
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low frequency in both varieties, confined to specialist fields.
Grammar
How to Use “chromic oxide” in a Sentence
chromic oxide + [verb: is used as, acts as, serves as] + [noun: pigment, abrasive, catalyst][verb: Apply, Mix, Synthesise] + chromic oxide + [preposition: with, to, for]Vocabulary
Collocations
Examples
Examples of “chromic oxide” in a Sentence
verb
British English
- The surface was chromic oxidised to enhance corrosion resistance.
- We need to chromic oxide the ceramic mix.
American English
- The process chromic oxidizes the metal, creating a protective layer.
- They chromic oxide the mixture before firing.
adverb
British English
- The compound reacted chromic-oxidely, forming the green precipitate.
- The layer was deposited chromic oxidely.
American English
- The material behaved chromic oxidely under heat.
- The pigment was applied chromic oxidely to the canvas.
adjective
British English
- The chromic oxide content was analysed.
- A chromic oxide-based catalyst was employed.
American English
- The chromic oxide pigment is very stable.
- We tested a chromic oxide coating.
Usage
Meaning in Context
Business
Rare; might appear in procurement or specification documents for industrial materials.
Academic
Common in chemistry, materials science, and art history papers.
Everyday
Virtually never used.
Technical
The primary register. Used in specifications for pigments, refractories, polishing compounds, and catalysts.
Vocabulary
Synonyms of “chromic oxide”
Strong
Neutral
Weak
Vocabulary
Antonyms of “chromic oxide”
Watch out
Common Mistakes When Using “chromic oxide”
- Misspelling as 'chronic oxide'.
- Confusing it with other chromium compounds like potassium chromate or chromium trioxide.
- Using it in non-technical contexts where 'green pigment' or 'polishing powder' would be clearer.
FAQ
Frequently Asked Questions
Chromic oxide (Cr₂O₃) is considered much less toxic and non-carcinogenic compared to chromium(VI) compounds. However, as an insoluble particulate, inhalation of its dust should be avoided.
It is commonly known as Viridian, a transparent, cool green pigment highly valued for its stability and use in glazing techniques.
Yes. It can form a passive, protective layer on some metals like chromium and aluminium, and it is also used as an abrasive in polishing compounds for metals and optics.
'Chrome green' often refers to a mixture of Prussian blue and chrome yellow pigments. Pure chromic oxide pigment (viridian) is a distinct, more stable, and permanent single compound.
A green inorganic compound with the chemical formula Cr₂O₃, used primarily as a pigment and in industrial applications.
Chromic oxide is usually technical/scientific in register.
Chromic oxide: in British English it is pronounced /ˌkrəʊmɪk ˈɒksaɪd/, and in American English it is pronounced /ˌkroʊmɪk ˈɑːksaɪd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None”
Learning
Memory Aids
Mnemonic
Think of CHROMIC (like CHROME, the shiny metal) OXIDE (a rust-like compound). Together, they form the 'green rust of chromium'.
Conceptual Metaphor
A GREEN WORKHORSE (reliable, functional, and defined by its colour and utility in industry).
Practice
Quiz
In which industry is chromic oxide LEAST likely to be used?