A revised and updated edition of the best-selling dictionary covering core vocabulary with over a hundred new entries and senses. More than 75,000 definitions and 8,000 usage examples aid understanding—and cover the words you need today Includes pronunciations, word origins, and synonym lists Features useful tables and special sections on Foreign Words & Phrases and Geographical Names New words include: athleisure , coronavirus , escape room , First Gentleman , herd immunity , hygge , on-brand , outro , patient zero , petrichor , PPE , telehealth , unmute , UX , and YouTuber .