Medicine is ever changing, and its terminology evolves constantly. If you're involved in health care in any way, you need to know the latest medical terms and what they mean. That's why you need Dorland's! The world's most trusted source on the language of medicine for over 100 years, it delivers more entries and better definitions than any other medical dictionary - so you can master more of the current terminology that you need to know. A wealth of illustrations and a remarkably user-friendly format make reference a snap.