/ Dictionary / Index E extrusion: Meaning and Definition of Find definitions for: ex•tru•sion Pronunciation: (ik-str'zhun), [key] — n. the act of extruding or the state of being extruded. something that is extruded. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: extrusion (Thesaurus) extrusile extrusion press Related Content Daily Word Quiz: circumspect Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language