carborundum: meaning, definition, pronunciation and examples
LowTechnical / Industrial
Quick answer
What does “carborundum” mean?
An extremely hard crystalline compound of silicon and carbon (silicon carbide), used as an abrasive.
Audio
Pronunciation
Definition
Meaning and Definition
An extremely hard crystalline compound of silicon and carbon (silicon carbide), used as an abrasive.
A trademark that has become a generic term for silicon carbide abrasives and grinding materials. It is sometimes used metaphorically to denote something extremely hard or resistant to wear.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. The term is equally technical in both varieties.
Connotations
Connotes industrial manufacturing, grinding, sharpening, and durability.
Frequency
Equally low frequency in both dialects, confined to specific technical fields.
Grammar
How to Use “carborundum” in a Sentence
[The] carborundum + [noun] (e.g., wheel, paper)[Verb] + with + carborundum (e.g., grind, sharpen, polish)Vocabulary
Collocations
Examples
Examples of “carborundum” in a Sentence
verb
British English
- The machinist will carborundum the edge to a fine finish. (rare/technical)
American English
- You need to carborundum that surface before painting. (rare/technical)
adverb
British English
- The surface was ground carborundum-smooth. (highly figurative/rare)
American English
- The blade was sharpened carborundum-sharp. (highly figurative/rare)
adjective
British English
- The carborundum grit was perfect for the initial rough grind.
American English
- He replaced the old wheel with a new carborundum wheel.
Usage
Meaning in Context
Business
Used in procurement, manufacturing, and supply chain contexts for abrasives and tooling.
Academic
Appears in materials science, engineering, and industrial chemistry texts.
Everyday
Virtually never used. Might be known by hobbyists (e.g., woodworkers, metalworkers).
Technical
Primary domain. Refers to the specific material for cutting, grinding, lapping, and polishing.
Vocabulary
Synonyms of “carborundum”
Strong
Neutral
Weak
Vocabulary
Antonyms of “carborundum”
Watch out
Common Mistakes When Using “carborundum”
- Misspelling as 'carbonundum' or 'carborendum'.
- Using it as a general synonym for 'sandpaper' (it's a specific material on the paper).
- Assuming it is common everyday vocabulary.
FAQ
Frequently Asked Questions
Carborundum (silicon carbide) is a synthetic compound first produced commercially in 1891. It does not occur naturally.
In highly technical or workshop jargon, it is occasionally used to mean 'to grind or polish with silicon carbide,' but this is non-standard and very rare.
Carborundum is silicon carbide (SiC), a synthetic material. Emery is a natural rock mixture primarily containing corundum (aluminium oxide) and other minerals. Both are abrasives, but silicon carbide is generally harder.
It is a specialized technical term from materials science and industrial manufacturing. The average speaker has no need for it in daily life, and even in relevant fields, the more formal 'silicon carbide' is often preferred.
An extremely hard crystalline compound of silicon and carbon (silicon carbide), used as an abrasive.
Carborundum is usually technical / industrial in register.
Carborundum: in British English it is pronounced /ˌkɑːbəˈrʌndəm/, and in American English it is pronounced /ˌkɑːrbəˈrʌndəm/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Harder than carborundum (informal, rare)”
- “To have a hide/skin like carborundum (to be very tough or insensitive)”
Learning
Memory Aids
Mnemonic
Think: 'CAR' needs 'BORing' (drilling) and 'RUNDUM' (sounds like 'around') - you use a hard abrasive (carborundum) to drill or grind around something.
Conceptual Metaphor
HARDNESS IS RESISTANCE (Carborundum is a source domain for extreme hardness and durability).
Practice
Quiz
What is 'carborundum' primarily used for?