verb (used with object), extruded, extruding.
to thrust out; force or press out; expel: to extrude molten rock.
to form (metal, plastic, etc.) with a desired cross section by forcing it through a die.
verb (used without object), extruded, extruding.
to protrude.
to be extruded: This metal extrudes easily.

1560–70; < Latin extrūdere to thrust out, drive out, equivalent to ex- ex-1 + trūdere to thrust, push

extruder, noun
extrusible [ik-stroo-suh-buhl, -zuh-] , extrudable, adjective
unextruded, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
extrude (ɪkˈstruːd)
1.  (tr) to squeeze or force out
2.  (tr) to produce (moulded sections of plastic, metal, etc) by ejection under pressure through a suitably shaped nozzle or die
3.  (tr) to chop up or pulverize (an item of food) and re-form it to look like a whole: a factory-made rod of extruded egg
4.  a less common word for protrude
[C16: from Latin extrūdere to thrust out, from trūdere to push, thrust]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1560s, from L. extrudere, from ex- out + trudere to thrust (see extrusion). Related: Extruded; extruding.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

extrude ex·trude (ĭk-strōōd')
v. ex·trud·ed, ex·trud·ing, ex·trudes

  1. To thrust, force, or press out.

  2. To protrude or project.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
What starts as liquid becomes a solid fiber as it's extruded from spinnerets.
The mix sets up quickly and easily supports its own weight as succeeding layers are extruded.
The dough is extruded by machines into different shapes.
But extruded parts require finishing and heat treating, which are time consuming.
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