What's the definition of i.e. vs e.g.? What about ex.? Learn the meaning of all three abbreviations and how to use them correctly. Xe's currency converter tool makes it easy to check live exchange rates, as well as convert your money with currency exchange across 130+ currencies! Real inspo from everyday style icons. What to wear, how to style it and where to take it. © 2026 Express. All rights reserved. Save whether you book your trip all at once, or over time. Book flights, hotels, homes, cars and more - all in one place. Unlock instant savings and earn OneKeyCash to spend on future travel. Book a home or hotel and get an extra $10 in OneKeyCash™. Use within 15 days. Members only. Terms apply. Ex (informal noun): A short form of example. The term ex is widely recognized for its brevity and versatility, often used to indicate past relationships, roles, or examples. ex (not comparable) Ex-, former, previously but no longer. My algebra II teacher's dad is an ex PE teacher at the same school. The meaning of EX is one that formerly held a specified position or place; especially : a former spouse or former partner in an intimate relationship. How to use ex in a sentence.