This is the first book to provide a comprehensive explanation of the bewildering array of acronyms and technical terms which have crept into the literature in recent years. Aimed at chemists and biochemists who have only an elementary knowledge of NMR, it provides a clear description of the concepts and basic principles involved. Recent developments in two-dimensional NMR methods in liquids have had a significant impact on the study of biological systems, and detailed descriptions of the techniques currently available are given. Mathematical descriptions are used where appropriate, since in many cases this is the only medium rigorous enough to convey ideas that are quantum mechanical in nature. However the level of mathematical competence required is low, and the more complex aspects are fully explained in the text.The use of a dictionary format allows easy reference. Each term is explained in full, extensive cross-references are included, and suggestions for further reading are given at the end of many entries.