For more than a quarter of a century, this amazingly comprehensive dictionary has been a standard international reference. Containing more than 115,000 terms and 125,000 definitions - from 100 areas of science and technology - this trusted resource provides definitions written in clear, simple language, understandable to the general reader, yet is consistent with the specialized use of the term.THE NEW SIXTH EDITION:* Thoroughly revised with 5,000 NEW TERMS* Each term includes a helpful pronunciation guide* Entries are complemented by 3,000 illustrations; appendices containing biographic listings, converison tables, taxonomic classification charts, and more* The only dictionary of scientific and technical terms to be thumb-indexedInvaluable to scientists, researchers, teachers, students, as well as interested lay persons, the McGraw-Hill Dictionary of Scientific and Technical Terms is truly the single best way for anyone to gain fluency in the language of science.The McGraw-Hill Editorial Staff, based in New York City, is one of the most skilled, experienced, and respected in the field of publishing.