A glossary of terms used in the discipline of occupational health and safety. The discipline of occupational health and safety is one of a very few which does not have a recognised and accredited vocabulary. It does however have a professional status, which possesses a vast body of technical knowledge taught by universities and training organisations throughout the UK. To many students embarking upon a career in occupational health and safety it means learning not one but several new languages. The language of the lawyer, the engineer, the medical practitioner, the psychologist and the occupational hygienist are all part of the Safety Practitioner's repertoire. This glossary seeks to define and formalise a wide range of terms in one volume, which will provide a quick and easy reference for those engaged in the profession. It contains definitions of almost all of the key words and concepts used in the NEBOSH Diploma syllabus guide. It will prove a valuable resource for the student of occupational health and safety at any level, but will be equally at home in the reference library of any manager who has to communicate with Safety Practitioners in their own language. Thanks are due to my professional team of colleagues whose consensus has led to the interpretations of the terms contained in this book. References are given in alphabetical order as key words or phrases, supplementary references are given in bold type within the text.