This immensely useful book ‘dictionary of library and information 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. Dictionary of library and information Science is a glossary of terms and acronyms of Librarianship, library Science, information Science, information Technology and knowledge organization and management. Alphabetical presentation used in the book will greatly help readers in quick-search of the desired words and terms. All the meanings and definitions are explained in a lucid and reader-friendly manner. Cross-references in the book will clear all confusion in the mind of readers and enhance the understanding of various technical terms. Dictionary of library and information Science is expected to become an essential part of every library and libraries reference collection and will also be helpful to librarians, master of library and information Science (mlis) and Ph.D. students, scholars, researchers and it professionals.