Breadcrumb Home > Dictionary > Index E extension cord: Meaning and Definition of Find definitions for: exten'sion cord" Pronunciation: [key] — Elect. Elect. an electric cord having a standard plug at one end and a standard electric jack at the other. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. extension bolt extension courses 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: locution Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language