# extrusion

/ɪkˈstɹuʒən/ (US) · /ɛkstɹˈuːʒən/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/extrusion
Updated: 2026-05-28

## Definition

the process of forcing a material through a small opening to create a specific shape. You see this when making pasta or plastic pipes.

For teachers: the process of forcing a material through a shaped opening to create a continuous profile. Often used in manufacturing and geology to describe the formation of structures.

## Examples

- The factory uses extrusion to make long plastic pipes.
- The geologist explained that the volcanic extrusion of lava created the unique rock formations visible along the coast.
- Advanced manufacturing techniques allow for the extrusion of complex geometries that were previously impossible to achieve with traditional casting methods.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.