definition of
extrusion

[1] #1 extrusion n. [bulge, bump, hump, swelling, gibbosity, gibbousness, jut, prominence, protuberance, protrusion, excrescence] something that bulges out or is protuberant or projects from its surroundings; "the gun in his pocket made an obvious bulge"; "the hump of a camel"; "he stood on the rocky prominence"; "the occipital protuberance was well developed"; "the bony excrescence. wn

[2] #2 extrusion n. [expulsion] squeezing out by applying pressure; "an unexpected extrusion of toothpaste from the bottom of the tube"; "the expulsion of pus from the pimple". wn