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. Animal Group Terminology Largest Countries in the World (by Area) Current Events This Week: January 2023 State Abbreviations Dinosaur Fossils (By U.S. State!) The Chinese Zodiac ✖ Related Content Daily Word Quiz: catalpa Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language