Black's Medical Dictionary  Black's Medical Dictionary (42nd ed, 2010, ) is a comprehensive medical dictionary featuring definitions of medical terms, concepts and conditions, published by A & C Black Publishers. It was first published in 1906, and is now in its forty-second edition. It is considered a simplified home reference for medical terms. According to the publisher, "It contains over 5000 definitions and descriptions of medical terms and concepts with over 1000 diagrams." The latest edition contains new and expanded sections on:  On April 1, 2010, Bloomsbury Academic & Professional became the new U.S. publisher of A&C Black titles. Distribution continues through Macmillan Publishers.