Definition

1. Verb:
   • To form or shape a material by forcing it through a specially designed opening or die. This is the primary technical meaning, often used in manufacturing contexts like plastics or metalworking.
   • To thrust, force, or push something out. This broader meaning describes the action of expelling or projecting something outward.

Usage and Examples

• Verb (Technical/Manufacturing):

  • The machine is designed to extrude molten plastic into long, continuous shapes.
  • Aluminum is often extruded to create window frames and other structural components.

• Verb (General: To thrust out):

  • The volcano extruded a slow-moving river of lava.
  • Certain types of worms extrude a sticky substance to trap their prey.

Advanced Usage and Nuances

• "to extrude oneself": This reflexive use is rare but can be found in literary or descriptive contexts to mean to project or thrust oneself forward or into a situation.
  • He seemed to extrude himself from the crowd, making his presence immediately known.

Variants and Related Words

• Extruder (n): A machine or tool used to extrude material.
  • The factory installed a new extruder for higher production capacity.
• Extrusion (n): The process or product of extruding.
  • The extrusion of these polymer fibers requires precise temperature control.
• Extrudate (n): The material that has been extruded; the product of an extrusion process.
  • The quality of the extrudate was inspected for consistency.

Synonyms

• Force out
• Eject
• Expel
• Squeeze out (for softer materials)
• Press (in a shaping context)

Antonyms

• Intrude (to force in)
• Ingest (to take in)
• Absorb

Related Phrases and Technical Terms

• Extrusion molding: A manufacturing process for creating objects of a fixed cross-sectional profile.
• Extrusion line: The series of machines (extruder, die, cooling, cutting) used in the extrusion process.
• Cold extrusion: The process of extruding material at or near room temperature.

Verb

1. form or shape by forcing through an opening
   • extrude steel