ex·tru·sion 
(ĭk-strzhən)
(ĭk-strzhən)n.
1. The act or process of pushing or thrusting out.
2. The act or process of shaping by forcing through a die.
3. An object or material produced by extruding.
[Medieval Latin extrūsiō, extrūsiōn-, from Latin extrūsus, past participle of extrūdere, to thrust out; see EXTRUDE.]