The present publication is an up-to-date, authentic and comprehensive dictionary of electronics, which recognises that electronics is a field in its own right, with its own language and that terms and their definitions are important for professional and student of electronics. It aims to provide clear, concise, and correct definitions and descriptions of the terms used in electronics. The terminology of all the branches of electronics are included in this work. This work is designed to be a comprehensive reference tool for electronics professionals, students and laymen interested in electronics. It is earnestly hoped that it will be an authoritative source to which one can turn with confidence for meaning and knowledge of the common, specialised and latest terms in electronics and allied fields.