This immensely useful book ‘Dictionary of Science’ has been designed as an easy and just-in-time reference and collection of frequently used terms and definitions from a wide spectrum of topics in this specialised subject. The book is immensely useful not only for professionals and students, but also for competitive exam aspirants who have frequent need for information about terms used in Science. The terms defined in this book are taken from all fields of Science such as Physics, Chemistry, Botany and Zoology. Various latest technological developments in the fields such as Nanotechnology, Biotechnology, Genetics, Bioinformatics, Computer Science, Information Technology and much more are dealt in detail. In short, the terms both of pure science and of its applications are covered. Further to make easy the use of this book for reference purposes, cross-referencing has also been used. Users of this Dictionary will find it easy to understand the various terms as they are explained in a very lucid manner. It will benefit not only the competitive exam aspirants, but also professionals, parents, students at all levels, researchers, and scholars.