extrusion

[ik-stroo-zhuh n] /ɪkˈstru ʒən/
noun
1.
the act of extruding or the state of being extruded.
2.
something that is extruded.
Origin of extrusion
1530-40; < Medieval Latin extrūsiōn- (stem of extrūsiō), equivalent to Latin extrūs(us) (past participle of extrūdere to extrude) + -iōn- -ion
Examples from the web for extrusion
  • Lava domes are formed by the extrusion of viscous felsic magma.
British Dictionary definitions for extrusion

extrusion

/ɪkˈstruːʒən/
noun
1.
the act or process of extruding
2.
  1. the movement of magma onto the surface of the earth through volcano craters and cracks in the earth's crust, forming igneous rock
  2. any igneous rock formed in this way
3.
a component or length of material formed by the process of extruding
Derived Forms
extrusible, adjective
Word Origin
C16: from Medieval Latin extrūsiō, from extrūdere to extrude
Word Origin and History for extrusion
n.

1530s, from Latin extrusionem (nominative extrusio), noun of action from past participle stem of extrudere, from ex- "out" (see ex-) + trudere "to thrust, push," from PIE *treud- "to press, push, squeeze" (see threat).

extrusion in Medicine

extrusion ex·tru·sion (ĭk-strōō'zhən)
n.

  1. A thrusting or forcing out of a normal position.

  2. The eruption or migration of a tooth beyond its normal occlusal position.

extrusion in Science
extrusion
  (ĭk-str'zhən)   

  1. The emission of lava onto the surface of the Earth. ◇ Rocks that form from the cooling of lava are generally fine-grained (because they cool quickly, before large crystals can grow) and are called extrusive rocks. Compare intrusion.

  2. The process of making a shaped object, such as a rod or tube, by forcing a material into a mold.