Breadcrumb Home > Dictionary > Index I impact extrusion: Meaning and Definition of Find definitions for: im'pact extru"sion Pronunciation: [key] — Metalworking. Metalworking. an extrusion process in which a slug of cold metal in a shallow die cavity is formed by the action of a rapidly moving punch that forces the metal through the die or back around the punch. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. impacter impaction TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: pentimento Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language