Etymograph

English

extrusion

Extrusion comes from Latin extrūdere, from trūdō ‘to thrust’, and ultimately from Proto-Indo-European *trewd-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*trewd-1‘to push, to thrust’reconstructed
  2. Proto-Italicc. 1500–700 BCE*troudō1‘to thrust’reconstructed
  3. Latinc. 75 BCE–200 CEtrūdō2as trūdere‘to thrust’
  4. Latinc. 75 BCE–200 CEextrūdere2
  5. Englishtodayextrusion2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin trudo
  2. 2 Wiktionary, English extrusion

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*trewd-Wiktionary, Latin trudo‘to push, to thrust’reconstructed
  2. Proto-Italicc. 1500–700 BCE*troudōWiktionary, Latin trudo‘to thrust’reconstructed
  3. Latinc. 75 BCE–200 CEtrūdōWiktionary, English extrusionas trūdere‘to thrust’
  4. Latinc. 75 BCE–200 CEextrūdereWiktionary, English extrusion
  5. EnglishtodayextrusionWiktionary, English extrusion

Linked words

through Proto-Indo-European *trewd- ‘to push, to thrust’

threat, thrust, protrude, protrusion, 10 more

through Latin trūdō ‘to thrust’

intrude, abstruse, 9 more

Today it means

noun A manufacturing process where a billet of material is pushed and/or drawn through a die to create a shaped rod, rail or pipe.

Sources

Sources: Wiktionary, “extrusion”; the older steps come from the Wiktionary entry for Latin trudo. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *trewd- / extrusion

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