ex·trude

[ik-strood] verb, ex·trud·ed, ex·trud·ing.
verb (used with object)
1.
to thrust out; force or press out; expel: to extrude molten rock.
2.
to form (metal, plastic, etc.) with a desired cross section by forcing it through a die.
verb (used without object)
3.
to protrude.
4.
to be extruded: This metal extrudes easily.

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

ex·trud·er, noun
ex·tru·si·ble [ik-stroo-suh-buhl, -zuh-] , ex·trud·a·ble, adjective
un·ex·trud·ed, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Extrude is a GRE word you need to know.
So is exasperate. Does it mean:
an abnormal outgrowth, usually harmless, on an animal or vegetable body.
to irritate or provoke to a high degree; annoy extremely:
Collins
World English Dictionary
extrude (ɪkˈstruːd) [Click for IPA pronunciation guide]
 
vb
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]
 
ex'truded
 
adj

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

extrude
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-str&oomacr;d')
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
As they develop inside your red blood cells, they extrude minute knobs onto the surface of the cells.
So it is good to paw over my tiresome routines and snap judgments, to extrude doubts and worries and clean out that hog barn.
Meanwhile he is rid of the tube and struggles to extrude vowels and consonants from his larynx.
Seismicity and deformation remain unchanged as lava continues to extrude onto the south crater floor.
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