The 27th edition of "Stedman's Medical Dictionary" reflects the thorough revision and critical review by 44 medical consultants as well as by a team of skilled editors and expert lexicographers. Readers will note extensive updating in all specialties, but especially in the terminology of genetics, oncology, pediatrics, pulmonology, emergency medicine, bacteriology, and laboratory medicine. Additionally, in accordance with the nomenclature approved by the International Federation of Associations of Anatomists, gross anatomy and neuroanatomy terminology now reflects the Terminologia Anatomica (TA), while still retaining the Nomina Anatomica Latin terms for histology and embryology. Anatomical definitions are found where readers are most likely to look - at the English translations of the Latin terms. The 27th also includes veterinary medicine terms, now focused solely on terminology relevant to human medicine. "Stedman's 27th" contains more than 1,050 images, many of them in color and new to the "Stedman's Dictionary", which expand and clarify the meanings of terms. Every image was reviewed by specialty consultants for clarity, scientific accuracy, and currency. Numerous tables present complicated information in schematic format to facilitate learning. There are also 64 pages of full-color anatomy and diagnostic medicine images, as well as a 32-page quick-reference anatomical atlas showcasing art from 'adam.com[trademark]'. A complete index containing the names of each structure accompanies these richly labeled illustrations. Brand new to the 27th edition, the 'Genus Finder' speeds the search for definitions of genus species names by spelling out the genus abbreviations under the species names. Along with the new features in the 27th, readers will continue to benefit from features found in the previous edition, including, 'High Profile Terms', 131 concepts that so profoundly affect the practice of medicine that they warrant more than the standard dictionary definition: 'Word Finder', a long list of multiple-term entries in the front of the book to speed readers to the definition they seek; Cross-References, printed in blue, to point readers quickly to the preferred term where the definition appears; 'Combining Forms', highlighted to help readers build their medical vocabulary; 'Precision Thumb Tabs', which appear at the edge of every page, constantly orienting the reader in the book and speeding the search. Readers will find "Stedman's 27th" more accessible, informative, and comprehensive, the perfect guide for those who wish to speak and write about health care more precisely.