extrude
C1Technical/Formal
Definition
Meaning
to force or push something out through a small opening (like through a die in manufacturing).
To expel, thrust out, or cause something to project outward; can be used metaphorically for excluding someone or forcing ideas out.
Linguistics
Semantic Notes
The verb often implies a continuous, shaped output (e.g., plastic, metal) rather than a single ejection. It carries a sense of pressure and forming.
Dialectal Variation
British vs American Usage
Differences
No major lexical differences; spelling and pronunciation follow standard regional patterns.
Connotations
Same industrial/technical connotation in both varieties.
Frequency
Equally low-frequency in general use, but standard in engineering/manufacturing contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[SUBJ] extrude [OBJ] (from [SOURCE])[SUBJ] extrude [OBJ] through [INSTRUMENT][OBJ] be extruded (by [SUBJ])Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None specific; technical term.”
Usage
Context Usage
Business
Used in manufacturing/industrial reports: 'The new line can extrude polymer profiles at twice the speed.'
Academic
Found in materials science, geology (e.g., magma extruding), and engineering papers.
Everyday
Rare; might be used metaphorically in creative writing: 'She felt extruded from the social circle.'
Technical
Core usage in processes like plastic extrusion, 3D printing, and metal forming.
Examples
By Part of Speech
verb
British English
- The machine will extrude the molten aluminium into long sections.
- He felt extruded from the committee after the vote.
American English
- The factory extrudes plastic pellets to make piping.
- Lava was extruded from the fissure.
adverb
British English
- Not standard; rarely if ever used.
American English
- Not standard; rarely if ever used.
adjective
British English
- The extruded sections were checked for quality.
- An extruded polystyrene board was used for insulation.
American English
- We ordered extruded aluminum profiles for the frame.
- The extruded product cooled on the conveyor.
Examples
By CEFR Level
- The machine extrudes pasta into different shapes.
- The new process allows us to extrude the polymer at a much higher temperature.
- Magma can extrude onto the surface as lava.
- The company was accused of trying to extrude smaller competitors from the market.
- The software can simulate how the material will extrude through the complex die.
Learning
Memory Aids
Mnemonic
Think of a tube of TOOTHPASTE: you EXTRUDE the paste by squeezing it out through the small opening.
Conceptual Metaphor
IDEAS ARE OBJECTS / PEOPLE ARE MATERIALS ('His radical views extruded him from the mainstream debate.')
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Not to be confused with 'вытеснять' (to displace) in all contexts. The core Russian equivalent is 'выдавливать' or 'экструдировать' (tech.).
- Avoid using 'экструдировать' in non-technical speech; it's a direct loanword.
Common Mistakes
- Using 'extrude' for a sudden, single expulsion (like a bullet); 'eject' is better.
- Confusing with 'intrude' (to enter forcibly).
- Incorrect preposition: 'extrude in' instead of 'extrude from/through'.
Practice
Quiz
In which context is 'extrude' used most precisely?
FAQ
Frequently Asked Questions
Primarily, yes, but it can be used metaphorically in social or academic contexts to mean 'force out' or 'exclude'.
The main noun is 'extrusion'. The thing produced can be called an 'extrudate' in technical contexts.
Rarely. The subject is usually the agent forcing something out (transitive). However, in geology, you might see 'The lava extruded from the volcano' (intransitive).
'Extrude' often implies shaping as something is pushed out through an opening (like toothpaste). 'Expel' is broader, meaning to force out, often from a group or container, without the shaping connotation.