MEDLINEplus, the consumer health Web site from the National Library of Medicine, had recently added an online version of Merriam-Webster's Medical Dictionary. Added in response to feedback from MEDLINEplus users, the medical dictionary provides definitions, correct spelling, and pronunciation help for 60,000 words and phrases used by healthcare professionals. The dictionary also offers "biographies of individuals who have given their names to the language of medicine." With the addition of this medical dictionary, MEDLINEplus becomes an even more valuable resource for staying informed about one's health.