WordReference Random House Learner's Dictionary of American English © 2017
ex•trude /ɪkˈstrud/USA pronunciation   v. [+ object], -trud•ed, -trud•ing. 
  1. Geologyto force or press out, as through a small opening that gives shape:The spaghetti-making machine extrudes dough through tiny holes.
ex•tru•sion /ɪkˈstruʒən/USA pronunciation  n. [uncountable]See -trude-.

WordReference Random House Unabridged Dictionary of American English © 2017
ex•trude  (ik stro̅o̅d),USA pronunciation v.,  -trud•ed, -trud•ing. 
  1. Geologyto thrust out; force or press out;
    expel:to extrude molten rock.
  2. Metallurgyto form (metal, plastic, etc.) with a desired cross section by forcing it through a die.

  1. to protrude.
  2. Metallurgyto be extruded:This metal extrudes easily.
ex•truder, n. 
ex•tru•si•ble  (ik stro̅o̅sə bəl, -zə-),USA pronunciation  ex•truda•ble, adj. 
  • Latin extrūdere to thrust out, drive out, equivalent. to ex- ex-1 + trūdere to thrust, push
  • 1560–70

Collins Concise English Dictionary © HarperCollins Publishers::

extrude /ɪkˈstruːd/ vb
  1. (transitive) to squeeze or force out
  2. (transitive) to produce (moulded sections of plastic, metal, etc) by ejection under pressure through a suitably shaped nozzle or die
  3. (transitive) to chop up or pulverize (an item of food) and re-form it to look like a whole
Etymology: 16th Century: from Latin extrūdere to thrust out, from trūdere to push, thrust

exˈtruded adj

'extrude' also found in these entries:

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