A manufacturing process where a billet of material is pushed and/or drawn through a die to create a shaped rod, rail or pipe. / An item formed by the process of extrusion.

plural of extrusion

Jutting out; extruding. / (geology) Of rocks: forced, while in a plastic or molten state, on to the Earth's surface to lie atop existing rocks.

(geology) Rock which has been formed through volcanic extrusion.

plural of extrusive

Capable of being extruded.