Breadcrumb Home > Dictionary > Index E expansion slot: Meaning and Definition of Find definitions for: expan'sion slot" Pronunciation: [key] — Computers. Computers. a connection in a computer, esp. a microcomputer, to which a new board can be added to expand the computer's capabilities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. expansion joint expansion team TrendingHere are the facts and trivia that people are buzzing about. Biographies: Notable Jewish Religious Leaders Current Events This Week: September 2023 Hispanic Population and the 2010 U.S. Census Preamble of the United Nations Charter The Jewish Calendar ✖ Related Content Daily Word Quiz: qiviut Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language